Add extra system property constants
Add java version methods git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/lang/trunk@136992 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Stephen Colebourne
parent
54161dd497
commit
f56215806c
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@ -60,60 +60,243 @@ package org.apache.commons.lang;
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* @author Based on code from Avalon Excalibur
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* @author Based on code from Lucene
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* @author <a href="mailto:scolebourne@apache.org">Stephen Colebourne</a>
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* @version $Id: SystemUtils.java,v 1.1 2002/08/22 22:11:25 scolebourne Exp $
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* @author <a href="mailto:sdowney@panix.com">Steve Downey</a>
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* @version $Id: SystemUtils.java,v 1.2 2002/08/25 22:17:53 scolebourne Exp $
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*/
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public class SystemUtils {
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/**
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* Prevent construction of SystemUtils instances
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* SystemUtils instances should NOT be constructed in standard programming.
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* Instead, the class should be used as <code>SystemUtils.FILE_SEPARATOR</code>.
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* This constructor is public to permit tools that require a JavaBean instance
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* to operate.
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*/
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private SystemUtils() {
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public SystemUtils() {
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}
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/** The line separator string from System.getProperty() */
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public static final String LINE_SEPARATOR = System.getProperty("line.separator");
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/** The path separator string from System.getProperty() */
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public static final String PATH_SEPARATOR = System.getProperty("path.separator");
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/** The file separator string from System.getProperty() */
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/**
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* System Property: file.separator
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* File separator ("/" on UNIX).
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* First in version: 1.1
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*/
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public static final String FILE_SEPARATOR = System.getProperty("file.separator");
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/** The working (user) directory string from System.getProperty() */
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public static final String USER_WORKING_DIRECTORY = System.getProperty("user.dir");
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/** The user home directory string from System.getProperty() */
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public static final String USER_HOME_DIRECTORY = System.getProperty("user.home");
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/** The user account name string from System.getProperty() */
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public static final String USER_NAME = System.getProperty("user.name");
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/** The os name string from System.getProperty() */
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public static final String OS_NAME = System.getProperty("os.name");
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/** The os architecture string from System.getProperty() */
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public static final String OS_ARCHITECTURE = System.getProperty("os.arch");
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/** The os version string from System.getProperty() */
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public static final String OS_VERSION = System.getProperty("os.version");
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/** True iff this is running on Windows */
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public static final boolean IS_WINDOWS;
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/** True iff this is running on Unix */
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public static final boolean IS_UNIX;
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/** True iff this is running on Mac */
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public static final boolean IS_MAC;
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/** True iff this is running on OS2 */
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public static final boolean IS_OS2;
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/** True iff this is running on Linux */
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public static final boolean IS_LINUX;
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/** The Java vendor string from System.getProperty() */
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public static final String JAVA_VENDOR = System.getProperty("java.vendor");
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/** The Java vendor url string from System.getProperty() */
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public static final String JAVA_VENDOR_URL = System.getProperty("java.vendor.url");
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/** The Java installation directory string from System.getProperty() */
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public static final String JAVA_HOME = System.getProperty("java.home");
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/** The Java class version number string from System.getProperty() */
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public static final String JAVA_CLASS_VERSION = System.getProperty("java.class.version");
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/** The Java classpath string from System.getProperty() */
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/**
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* System Property: java.class.path
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* Java class path.
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* First in version: 1.1
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*/
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public static final String JAVA_CLASS_PATH = System.getProperty("java.class.path");
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/** The Java version string from System.getProperty() */
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/**
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* System Property: java.class.version
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* Java class format version number.
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* First in version: 1.1
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*/
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public static final String JAVA_CLASS_VERSION = System.getProperty("java.class.version");
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/**
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* System Property: java.compiler
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* Name of JIT compiler to use.
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* First in version: 1.4
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*/
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public static final String JAVA_COMPILER = System.getProperty("java.compiler");
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/**
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* System Property: java.ext.dirs
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* Path of extension directory or directories.
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* First in version: 1.3
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*/
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public static final String JAVA_EXT_DIRS = System.getProperty("java.ext.dirs");
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/**
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* System Property: java.home
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* Java installation directory.
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* First in version: 1.1
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*/
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public static final String JAVA_HOME = System.getProperty("java.home");
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/**
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* System Property: java.io.tmpdir
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* Default temp file path.
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* First in version: 1.4
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*/
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public static final String JAVA_IO_TMPDIR = System.getProperty("java.io.tmpdir");
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/**
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* System Property: java.library.path
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* List of paths to search when loading libraries.
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* First in version: 1.4
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*/
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public static final String JAVA_LIBRARY_PATH = System.getProperty("java.library.path");
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/**
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* System Property: java.specification.name
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* Java Runtime Environment specification name.
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* First in version: 1.2
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*/
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public static final String JAVA_SPECIFICATION_NAME = System.getProperty("java.specification.name");
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/**
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* System Property: java.specification.vendor
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* Java Runtime Environment specification vendor.
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* First in version: 1.2
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*/
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public static final String JAVA_SPECIFICATION_VENDOR = System.getProperty("java.specification.vendor");
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/**
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* System Property: java.specification.version
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* Java Runtime Environment specification version.
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* First in version: 1.2
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*/
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public static final String JAVA_SPECIFICATION_VERSION = System.getProperty("java.specification.version");
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/**
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* System Property: java.vendor
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* Java vendor-specific string.
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* First in version: 1.1
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*/
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public static final String JAVA_VENDOR = System.getProperty("java.vendor");
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/**
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* System Property: java.vendor.url
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* Java vendor URL.
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* First in version: 1.1
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*/
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public static final String JAVA_VENDOR_URL = System.getProperty("java.vendor.url");
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/**
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* System Property: java.version
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* Java version number.
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* First in version: 1.1
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*/
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public static final String JAVA_VERSION = System.getProperty("java.version");
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/**
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* System Property: java.vm.name
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* Java Virtual Machine implementation name.
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* First in version: 1.2
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*/
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public static final String JAVA_VM_NAME = System.getProperty("java.vm.name");
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/**
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* System Property: java.vm.specification.name
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* Java Virtual Machine specification name.
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* First in version: 1.2
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*/
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public static final String JAVA_VM_SPECIFICATION_NAME = System.getProperty("java.vm.specification.name");
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/**
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* System Property: java.vm.specification.vendor
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* Java Virtual Machine specification vendor.
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* First in version: 1.2
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*/
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public static final String JAVA_VM_SPECIFICATION_VENDOR = System.getProperty("java.vm.specification.vendor");
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/**
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* System Property: java.vm.specification.version
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* Java Virtual Machine specification version.
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* First in version: 1.2
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*/
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public static final String JAVA_VM_SPECIFICATION_VERSION = System.getProperty("java.vm.specification.version");
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/**
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* System Property: java.vm.vendor
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* Java Virtual Machine implementation vendor.
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* First in version: 1.2
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*/
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public static final String JAVA_VM_VENDOR = System.getProperty("java.vm.vendor");
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/**
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* System Property: java.vm.version
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* Java Virtual Machine implementation version.
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* First in version: 1.2
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*/
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public static final String JAVA_VM_VERSION = System.getProperty("java.vm.version");
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/**
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* System Property: line.separator
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* Line separator ("\n" on UNIX).
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* First in version: 1.1
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*/
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public static final String LINE_SEPARATOR = System.getProperty("line.separator");
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/**
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* System Property: os.arch
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* Operating system architecture.
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* First in version: 1.1
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*/
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public static final String OS_ARCH = System.getProperty("os.arch");
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/**
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* System Property: os.name
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* Operating system name.
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* First in version: 1.1
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*/
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public static final String OS_NAME = System.getProperty("os.name");
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/**
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* System Property: os.version
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* Operating system version.
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* First in version: 1.1
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*/
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public static final String OS_VERSION = System.getProperty("os.version");
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/**
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* System Property: path.separator
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* Path separator (":" on UNIX).
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* First in version: 1.1
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*/
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public static final String PATH_SEPARATOR = System.getProperty("path.separator");
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/**
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* System Property: user.dir
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* User's current working directory.
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* First in version: 1.1
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*/
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public static final String USER_DIR = System.getProperty("user.dir");
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/**
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* System Property: user.home
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* User's home directory.
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* First in version: 1.1
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*/
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public static final String USER_HOME = System.getProperty("user.home");
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/**
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* System Property: user.name
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* User's account name.
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* First in version: 1.1
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*/
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public static final String USER_NAME = System.getProperty("user.name");
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/** True iff this is Java version 1.1. */
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public static final boolean IS_JAVA_1_1 = JAVA_VERSION.startsWith("1.1.");
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/** True iff this is Java version 1.2. */
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@ -125,79 +308,133 @@ public class SystemUtils {
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/** True iff this is Java version 1.3. */
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public static final boolean IS_JAVA_1_5 = JAVA_VERSION.startsWith("1.5.");
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/*
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* The JLS doesn't seem to specify an exact naming convention for the
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* os.name. We ensure a uniform naming here.
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*/
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static {
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// from http://www.geocities.com/vamp201/os.html
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if (OS_NAME.startsWith("Windows")) {
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IS_WINDOWS = true;
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IS_UNIX = false;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("SunOS")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("Solaris")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("Linux")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = true;
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} else if (OS_NAME.startsWith("HP-UX")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("AIX")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("Irix")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("Digital Unix")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("OS/2")) {
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IS_WINDOWS = false;
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IS_UNIX = false;
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IS_MAC = false;
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IS_OS2 = true;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("Mac")) {
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IS_WINDOWS = false;
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IS_UNIX = false;
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IS_MAC = true;
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IS_OS2 = false;
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IS_LINUX = false;
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} else {
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IS_WINDOWS = false;
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IS_UNIX = false;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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}
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}
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// Parsing operating system may stay here, or it may be moved somewhere else entirely
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// /** True iff this is running on Windows */
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// public static final boolean IS_WINDOWS;
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// /** True iff this is running on Unix */
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// public static final boolean IS_UNIX;
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// /** True iff this is running on Mac */
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// public static final boolean IS_MAC;
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// /** True iff this is running on OS2 */
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// public static final boolean IS_OS2;
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// /** True iff this is running on Linux */
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// public static final boolean IS_LINUX;
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//
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// /*
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// * The JLS doesn't seem to specify an exact naming convention for the
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// * os.name. We ensure a uniform naming here.
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// */
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// static {
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// // from http://www.geocities.com/vamp201/os.html
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// if (OS_NAME.startsWith("Windows")) {
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// IS_WINDOWS = true;
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// IS_UNIX = false;
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// IS_MAC = false;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// } else if (OS_NAME.startsWith("SunOS")) {
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// IS_WINDOWS = false;
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// IS_UNIX = true;
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// IS_MAC = false;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// } else if (OS_NAME.startsWith("Solaris")) {
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// IS_WINDOWS = false;
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// IS_UNIX = true;
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// IS_MAC = false;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// } else if (OS_NAME.startsWith("Linux")) {
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// IS_WINDOWS = false;
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// IS_UNIX = true;
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// IS_MAC = false;
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// IS_OS2 = false;
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// IS_LINUX = true;
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// } else if (OS_NAME.startsWith("HP-UX")) {
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// IS_WINDOWS = false;
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// IS_UNIX = true;
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// IS_MAC = false;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// } else if (OS_NAME.startsWith("AIX")) {
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// IS_WINDOWS = false;
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// IS_UNIX = true;
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// IS_MAC = false;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// } else if (OS_NAME.startsWith("Irix")) {
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// IS_WINDOWS = false;
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// IS_UNIX = true;
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// IS_MAC = false;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// } else if (OS_NAME.startsWith("Digital Unix")) {
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// IS_WINDOWS = false;
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// IS_UNIX = true;
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// IS_MAC = false;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// } else if (OS_NAME.startsWith("OS/400")) {
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// IS_WINDOWS = false;
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// IS_UNIX = true;
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// IS_MAC = false;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// } else if (OS_NAME.startsWith("OS/2")) {
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// IS_WINDOWS = false;
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// IS_UNIX = false;
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// IS_MAC = false;
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// IS_OS2 = true;
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// IS_LINUX = false;
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// } else if (OS_NAME.startsWith("Mac OS X")) {
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// IS_WINDOWS = false;
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// IS_UNIX = true;
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// IS_MAC = true;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// } else if (OS_NAME.startsWith("Mac")) {
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// IS_WINDOWS = false;
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// IS_UNIX = false;
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// IS_MAC = true;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// } else {
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// IS_WINDOWS = false;
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// IS_UNIX = false;
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// IS_MAC = false;
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// IS_OS2 = false;
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// IS_LINUX = false;
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// }
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// }
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/**
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* Get the Java version number as a float.
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* Example output:<br>
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* 1.2f for JDK 1.2<br>
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* 1.31f for JDK 1.3.1<br>
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*
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* @return the version, for example 1.31f for JDK 1.3.1
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*/
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public static float getJavaVersion() {
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String str = JAVA_VERSION.substring(0, 3);
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if (JAVA_VERSION.length() >= 5) {
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str = str + JAVA_VERSION.substring(4, 5);
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}
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return Float.parseFloat(str);
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}
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/**
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* Is the Java version at the the requested version.
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* Example input:<br>
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* 1.2f for JDK 1.2<br>
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* 1.31f for JDK 1.3.1<br>
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||||
*
|
||||
* @param requiredVersion the required version, for example 1.31f
|
||||
* @return true if the actual version is equal or greater than the required version
|
||||
*/
|
||||
public boolean isJavaVersionAtLeast(float requiredVersion) {
|
||||
return (getJavaVersion() >= requiredVersion);
|
||||
}
|
||||
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue