【Java】字符串替换replace

1.使用replace（）

public class Test{
	public static void main(String[] args){
		String words="hello java,hello,php";
		System.out.println("源字符串是:"+words);
		System.out.println("replace(\"l\",\"D\")结果:"+words.replace("l","D"));
		words="hr's dog";
		System.out.println("源字符串是:"+words);
		System.out.println("replace(\"r's\",\"is\")结果:"+words.replace("r's","is"));
	}
}

2.使用replaceFirst()

String words="hello java,hello,php";
		String news=words.replaceFirst("hello", "你好");
		System.out.println(news);

3.使用replaceAll()

String words="hello java,hello,php";
		String news=words.replaceAll("hello", "你好");
		System.out.println(news);