int a=1,b=2,temp;

temp=b;b=a;a=temp;

public class Operasi{ public Object a,b;private Object temp;

Public void tukarNilai(){temp=b;b=a;a=temp;

}}

public static void main(String args[]){ Operasi opr = new Operasi();opr.a=“a”;opr.b=“b”;opr.tukarNilai();

}

public static void main(String args[]){ Operasi opr = new Operasi();opr.a=1;opr.b=2;opr.tukarNilai();

}

public class Operasi <T>{ public T a,b;private T temp;

Public void tukarNilai(){temp=b;b=a;a=temp;

}}

public static void main(String args[]){ Operasi<Integer> opr = new Operasi<Integer>();opr.a=1;opr.b=2;opr.tukarNilai();

}

public static void main(String args[]){ Operasi<String> opr = new Operasi<String>();opr.a=“a”;opr.b=“b”;opr.tukarNilai();

}