demo.java

软通公司培训的课件和习题里面有答案。。。

package com.iss.five;

public class Demo {

/*	public void add(int i,int j){
		System.out.println("int :" + (i+j));
	}*/
	
/*	public void add(float i,float j){
		System.out.println("float: " + (i+j));
	}*/
	
	public void add(String s1,String s2){
		System.out.println(s1+s2);
	}
	
	public void add(double i,double j){
		System.out.println("double :" + (i+j));
	}
	
	public static void main(String args[]){
		Demo d = new Demo();
		int i = 10; int j =20;
		d.add(i, j);
		d.add(2.56f, 7.44f);
		d.add("Hello", " World");
	}
}