Ex22) Java OOP

class Test1 implements Cloneable {

int a,b;

Test1(int a, int b){

this.a = a;

this.b = b;

}

public String toString(){          //type일치:String

return ("a=" + a + " " + "b=" + b);

}

public Test1 boksa(){

Object obj = null;

try {

obj = clone();       //this.clone()

} catch(CloneNotSupportedException e){}  

           //Exception는 try catch 블럭을 통해서만 call possible하다.
                                                   // (exception handling 위해만든 function!)

return (Test1)obj; //cast

}

}

public class Num04 {

public static void main(String[] args) {

Test1 t = new Test1(10,20);

Test1 b = t.boksa();

System.out.println(t);

System.out.println(b);

System.out.println(t.toString());    //=

System.out.println(b.toString());    //=

}