7.16 字符串格式化

• format

public class HelloWorld {
    public static void main(String args[]){

        String name = "张三";
        int age = 19;
        double score = 8.8;
        String str = String.format("姓名:%s,年龄:%d,成绩:%5.2f",name,age,score);
        System.out.println(str);

    }

}