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JAVA-23319 | Moving DualPrintStream (#14524) 

* JAVA-23319 | moving DualPrintStream

* JAVA-23319 | adding checkerror
This commit is contained in:
Gaetano Piazzolla 2023-08-06 07:10:03 +02:00 committed by GitHub
parent 746b11f454
commit f90e26db1f
2 changed files with 49 additions and 40 deletions
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49
core-java-modules/core-java-io-apis/src/main/java/com/baeldung/outputtofile/DualPrintStream.java Normal file
View File

@ -0,0 +1,49 @@
package com.baeldung.outputtofile;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
class DualPrintStream extends PrintStream {
private final PrintStream second;
public DualPrintStream(OutputStream main, PrintStream second) {
super(main);
this.second = second;
}
@Override
public void close() {
super.close();
second.close();
}
@Override
public void flush() {
super.flush();
second.flush();
}
@Override
public void write(byte[] buf, int off, int len) {
super.write(buf, off, len);
second.write(buf, off, len);
}
@Override
public void write(int b) {
super.write(b);
second.write(b);
}
@Override
public void write(byte[] b) throws IOException {
super.write(b);
second.write(b);
}
@Override
public boolean checkError() {
return super.checkError() && second.checkError();
}
}

40
core-java-modules/core-java-io-apis/src/test/java/com/baeldung/outputtofile/ConsoleOutputToFileUnitTest.java
View File

@ -4,7 +4,6 @@ import static org.junit.jupiter.api.Assertions.assertLinesMatch;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.nio.file.Files;
import java.nio.file.Path;
@ -15,45 +14,6 @@ import org.junit.jupiter.api.io.TempDir;
import com.google.common.collect.Lists;
class DualPrintStream extends PrintStream {
private final PrintStream second;
public DualPrintStream(OutputStream main, PrintStream second) {
super(main);
this.second = second;
}
@Override
public void close() {
super.close();
second.close();
}
@Override
public void flush() {
super.flush();
second.flush();
}
@Override
public void write(byte[] buf, int off, int len) {
super.write(buf, off, len);
second.write(buf, off, len);
}
@Override
public void write(int b) {
super.write(b);
second.write(b);
}
@Override
public void write(byte[] b) throws IOException {
super.write(b);
second.write(b);
}
}
public class ConsoleOutputToFileUnitTest {
// @formatter:off