旧值替换为新值

●String replace(旧值,新值)//将旧值替换为新值

注意点:只有返回值才是替换之后的结果

public class demo10 {
    public static void main(String[] args) {
        String talk = "当时明月在，曾照彩云归。软萌小鲨鱼！";
        String[] arr = {"明月","彩云","软萌"};
        for (int i = 0; i < arr.length; i++) {
            talk = talk.replace(arr[i],"**");
        }
        System.out.println(talk);
    }
}