매소드 오버로딩

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class NumBer   {     private int num1;     private int num2;       public void swap()     {         int swap=num1;         num1=num2;         num2=swap;       }     public void getNum1 (int new_num)     {         num1=new_num;       }     public int getNum1()     {         return num1;               }     public void getNum2 (int new_num)     {         num2=new_num;       }     public int getNum2()     {         return num2;               } }             public class NumBerTest {       public static void main (String [] args)     {         NumBer a;         a= new NumBer();                   a.getNum1(1);         a.getNum2(26);                   System.out.println(a.getNum1() +" "+ a.getNum2());                   System.out.printf("%d %d \n",a.getNum1(),a.getNum2());                   a.swap();                   System.out.println("스왑 이용후 데이터\n"+a.getNum1());         System.out.println(a.getNum2());       }           }