org.vishia.mainCmd

Class PrintStreamBuffer

java.lang.Object

org.vishia.mainCmd.PrintStreamBuffer

public class PrintStreamBuffer
extends java.lang.Object

This class contains three operations to replace System.out System.err and System.in with Appendable respectively CharSequence for in. It is especially for test.
The nested classes PrintStreamBuffer.InStream and PrintStreamBuffer.OutStream are the links between InputStream and CharSequence respectively PrintStream and Appendable, which are not contained in the Java core capabilities.

Since:

2020-03-24

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PrintStreamBuffer.InStream
static class	PrintStreamBuffer.OutStream This class is used for all outputs to the PrintStreamAdapter which are not gathered by the overridden methods of PrintStream.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	version Version, history and license.

Constructor Summary

Constructors

Constructor and Description
PrintStreamBuffer()

Method Summary

Modifier and Type	Method and Description
static java.io.PrintStream	replaceSystemErr(java.lang.Appendable buffer) Replaces the System.err for the whole JVM
static java.io.PrintStream	replaceSystemErr(java.lang.Appendable buffer, java.lang.Appendable buffer2) Replaces the System.err for the whole JVM
static java.io.InputStream	replaceSystemIn(java.lang.CharSequence buffer) Replaces the System.in for the whole JVM
static java.io.PrintStream	replaceSystemOut(java.lang.Appendable buffer) Replaces the System.out for the whole JVM

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

version

public static final java.lang.String version

Version, history and license.

• 2021-09-24 Hartmut Generally second output usable.
• 2020-03-25 Hartmut creation .

Copyright/Copyleft: For this source the LGPL Lesser General Public License, published by the Free Software Foundation is valid. It means:

1. You can use this source without any restriction for any desired purpose.
2. You can redistribute copies of this source to everybody.
3. Every user of this source, also the user of redistribute copies with or without payment, must accept this license for further using.
4. But the LPGL is not appropriate for a whole software product, if this source is only a part of them. It means, the user must publish this part of source, but don't need to publish the whole source of the own product.
5. You can study and modify (improve) this source for own using or for redistribution, but you have to license the modified sources likewise under this LGPL Lesser General Public License. You mustn't delete this Copyright/Copyleft inscription in this source file.

If you are intent to use this sources without publishing its usage, you can get a second license subscribing a special contract with the author.

See Also:

Constant Field Values

Constructor Detail

PrintStreamBuffer

public PrintStreamBuffer()

Method Detail

replaceSystemOut

public static java.io.PrintStream replaceSystemOut(java.lang.Appendable buffer)

Replaces the System.out for the whole JVM

Parameters:

buffer - with this Appendable, usual a StringBuilder

Returns:

the System.out before to restore after usage.

replaceSystemErr

public static java.io.PrintStream replaceSystemErr(java.lang.Appendable buffer)

Replaces the System.err for the whole JVM

Parameters:

buffer - with this Appendable, usual a StringBuilder

Returns:

the System.err before to restore after usage.

replaceSystemErr

public static java.io.PrintStream replaceSystemErr(java.lang.Appendable buffer,
                                                   java.lang.Appendable buffer2)

Replaces the System.err for the whole JVM

Parameters:

buffer - with this Appendable, usual a StringBuilder

Returns:

the System.err before to restore after usage.

replaceSystemIn

public static java.io.InputStream replaceSystemIn(java.lang.CharSequence buffer)

Replaces the System.in for the whole JVM

Parameters:

buffer - with this CharSequence, usual a String or a StringBuilder

Returns:

the System.in before to restore after usage.