Need to hide System.out.println output in console

Question

class Hide{
public void test(){
System.out.println("hai");
public static void main(String[] args){
Hide obj=new Hide();
obj.test();
Output is : hai
But I don't want to display hai. How i can hide this
kindly help me on this........

Answer 1

class Hide {
     public void test() {
          System.out.println("hai");
     public static void main(String[] args) {
          System.out.println("before");
          java.io.PrintStream old_out = System.out;
          try {
               java.io.PrintStream pw = new java.io.PrintStream("test.txt");
               System.setOut(pw);
          } catch (java.io.IOException e) {
               e.printStackTrace();
          Hide obj=new Hide();
          obj.test();
          System.setOut(old_out);
          System.out.println("after");
}