Java.lang Class - Java Programming Questions and Answers

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What will be the output of the program?

class Tree { }  class Pine extends Tree { }  class Oak extends Tree { }  public class Forest1  {      public static void main (String [] args)     {          Tree tree = new Pine();          if( tree instanceof Pine )              System.out.println ("Pine");          else if( tree instanceof Tree )              System.out.println ("Tree");          else if( tree instanceof Oak )              System.out.println ( "Oak" );          else              System.out.println ("Oops ");      }  }