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Merge pull request #10730 from hmdrzsharifi/master 

bael-4909: Getting Java Version at Runtime
This commit is contained in:
Greg 2021-05-12 16:12:19 -04:00 committed by GitHub
parent d1719b0338 3cb6624aa6
commit e24d787fb1
2 changed files with 54 additions and 0 deletions
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6
core-java-modules/core-java-11-2/pom.xml
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@ -50,6 +50,11 @@
<version>${junit.jupiter.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
</dependencies>
<build>
@ -73,6 +78,7 @@
<junit.jupiter.version>5.7.0</junit.jupiter.version>
<assertj.version>3.17.2</assertj.version>
<mockserver.version>5.11.1</mockserver.version>
<commons-lang3.version>3.12.0</commons-lang3.version>
</properties>
</project>

48
core-java-modules/core-java-11-2/src/test/java/com/baeldung/version/VersionUnitTest.java Normal file
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@ -0,0 +1,48 @@
package com.baeldung.version;
import org.apache.commons.lang3.SystemUtils;
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
public class VersionUnitTest {
@Test
public void givenJava_whenUsingRuntime_thenGetVersion() {
String expectedVersion = "11";
Runtime.Version runtimeVersion = Runtime.version();
String version = String.valueOf(runtimeVersion.version().get(0));
Assertions.assertThat(version).isEqualTo(expectedVersion);
}
@Test
@Disabled("Only valid for Java 8 and lower")
public void givenJava_whenUsingCommonsLang_thenGetVersion() {
int expectedVersion = 8;
String[] versionElements = SystemUtils.JAVA_SPECIFICATION_VERSION.split("\\.");
int discard = Integer.parseInt(versionElements[0]);
int version;
if (discard == 1) {
version = Integer.parseInt(versionElements[1]);
} else {
version = discard;
}
Assertions.assertThat(version).isEqualTo(expectedVersion);
}
@Test
@Disabled("Only valid for Java 8 and lower")
public void givenJava_whenUsingSystemProp_thenGetVersion() {
int expectedVersion = 8;
String[] versionElements = System.getProperty("java.version").split("\\.");
int discard = Integer.parseInt(versionElements[0]);
int version;
if (discard == 1) {
version = Integer.parseInt(versionElements[1]);
} else {
version = discard;
}
Assertions.assertThat(version).isEqualTo(expectedVersion);
}
}