How to make java program output to a file instead of command prompt like usual ???

This source code will show you how to make java output that print in command prompt will be print in a file instead of command prompt.

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COMPLETE SOURCE CODE FOR : PutCommandPromptOutputToFile.java
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import java.io.PrintStream;

public class PutCommandPromptOutputToFile
{
public static void main(String[]args)
{
 try
 {
  PrintStream newOuputChannel=new PrintStream("output.txt");
  System.setOut(newOuputChannel);

  System.out.println("HI");
 }
 catch(Exception exception)
 {
  exception.printStackTrace();
 }
}
}

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JUST COMPILE AND EXECUTE IT
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Java source code to determine when application exit by print a line of text on command prompt

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COMPLETE SOURCE CODE FOR : DetermineWhenApplicationExit.java
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public class DetermineWhenApplicationExit
{
public static void main(String[]args)
{
 Runtime.getRuntime().addShutdownHook(new Thread()
 {
  public void run()
  {
   //Application will print "BYE" when it close
   System.out.println("BYE");
  }
 });

 //Make this application terminate
 System.exit(0);
}
}

*************************************************************
JUST COMPILE AND EXECUTE IT
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