Returning false from Equals methods without Overriding

Question

Write TestEquals class so that main method of Puzzle3 class prints false.

Note: You cannot override equals method o

Answer 1

Following would print false :)

import java.io.File;
import java.io.FileNotFoundException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.io.UnsupportedEncodingException;

public class TestEquals {

  public static void main(String[] args) {
    TestEquals testEquals = new TestEquals();
    System.out.println(testEquals.equals(testEquals));
  }

  static {
    System.setOut(new CustomPrintStream(new PrintStream(System.out)));
  }

  public static class CustomPrintStream extends PrintStream {

    /**
     * This does the trick.
     */
    @Override
      public void println(boolean x) {
      super.println(!x);
    }

    public CustomPrintStream(File file, String csn) throws FileNotFoundException, UnsupportedEncodingException {
      super(file, csn);
    }

    public CustomPrintStream(File file) throws FileNotFoundException {
      super(file);
    }

    public CustomPrintStream(OutputStream out, boolean autoFlush, String encoding)
      throws UnsupportedEncodingException {
      super(out, autoFlush, encoding);
    }

    public CustomPrintStream(OutputStream out, boolean autoFlush) {
      super(out, autoFlush);
    }

    public CustomPrintStream(OutputStream out) {
      super(out);
    }

    public CustomPrintStream(String fileName, String csn) throws FileNotFoundException,
                                                                 UnsupportedEncodingException {
      super(fileName, csn);
    }

    public CustomPrintStream(String fileName) throws FileNotFoundException {
      super(fileName);
    }
  }
}