stringconcat.java

软通公司培训的课件和习题里面有答案。。。

package com.nine.java;

public class StringConcat {

	public static void main(String[] args) {
		
		String s1= " Hello " ;
		String s2 = " World !" ;
		
		String s3 = s1.concat(s2);
		
		System.out.println("S1: "+s1);
		System.out.println("S3: "+s3);

	}

}