Package org.apache.tools.ant.util
Class KeepAliveOutputStream
java.lang.Object
java.io.OutputStream
java.io.FilterOutputStream
org.apache.tools.ant.util.KeepAliveOutputStream
- All Implemented Interfaces:
java.io.Closeable,java.io.Flushable,java.lang.AutoCloseable
public class KeepAliveOutputStream
extends java.io.FilterOutputStream
Class that can be used to wrap
System.out and System.err
without getting anxious about any client closing the stream.
In code-language it means that it is not necessary to do:
if (out != System.out && out != System.err) {
out.close();
}
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Field Summary
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Constructor Summary
Constructors Constructor Description KeepAliveOutputStream(java.io.OutputStream out)Constructor of KeepAliveOutputStream. -
Method Summary
Modifier and Type Method Description voidclose()This method does nothing.static java.io.PrintStreamwrapSystemErr()Convenience factory method that returns a non-closing PrintStream around System.err.static java.io.PrintStreamwrapSystemOut()Convenience factory method that returns a non-closing PrintStream around System.out.
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Constructor Details
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KeepAliveOutputStream
public KeepAliveOutputStream(java.io.OutputStream out)Constructor of KeepAliveOutputStream.- Parameters:
out- an OutputStream value, it should be standard output.
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Method Details
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close
public void close() throws java.io.IOExceptionThis method does nothing.- Specified by:
closein interfacejava.lang.AutoCloseable- Specified by:
closein interfacejava.io.Closeable- Overrides:
closein classjava.io.FilterOutputStream- Throws:
java.io.IOException- as we are overriding FilterOutputStream.
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wrapSystemOut
public static java.io.PrintStream wrapSystemOut()Convenience factory method that returns a non-closing PrintStream around System.out.- Returns:
- PrintStream
- Since:
- Ant 1.8.0
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wrapSystemErr
public static java.io.PrintStream wrapSystemErr()Convenience factory method that returns a non-closing PrintStream around System.err.- Returns:
- PrintStream
- Since:
- Ant 1.8.0
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