一.输入字符串数据

import java.util.Scanner;

public class kkb {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        String  line = sc.nextLine();
        System.out.println(line);
    }
}

二.String

三.String的构造方法

public class kkb {
    public static void main(String[] args) {
        String s1=new String();
        System.out.println("s1:"+s1);

        char[] chs={'a','b','c'};
        String s2=new String(chs);
        System.out.println("s2:"+s2);

        byte[] bys={97,98,99};
        String s3=new String(bys);
        System.out.println("s3:"+s3);

        String s4="abc";
        System.out.println("s4:"+s4);

    }
}