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javaprintlnsystem.out

can i write a similar class as "System" for printing something?

can i build a user-defined class for printing anything using printstream variable just as "System" class ?

so what i did is:

    import java.io.*;

    public final class SystemDemo{



public final static InputStream give=null;//the same variables 

public final static PrintStream take=null;

public final static PrintStream error = null;

}

and wanted to use this SystemDemo class as "System"(pre-defined) ,like

    SystemDemo.take.println("something");

but i get a NullPointerException .

Solution

  • You can try this, will work same for your requirement,

     public final class SystemDemo
 {
    public final static PrintStream take =  new PrintStream(System.out);
 }

    And then use this as,

    SystemDemo.take.println("Your String");

    It worked fine, tested with Netbeans.