replace.java

软通公司培训的课件和习题里面有答案。。。

package com.iss;

public class Replace {

	public static void main(String[] args){
		
		String s1 = "good morinig";
		String s2 = "night";
		
		//字符串的替换
		String ss = s1.replace(s1.substring(5, 12), s2);
		System.out.println(ss);
	}
	
}