import java.util.Scanner;

/**
 * @author: 马士兵教育
 * @create: 2019-08-18 16:52
 */
/*
* 字符串在比较的时候：
*  ==：比较的是地址
*  equals:比较的是具体的值
* */
public class StringDemo {

    public static void main(String[] args) {
        String str = "abc";
        String str1 = str;
        System.out.println(str == str1);
        System.out.println(str.equals(str1));

        Scanner sc = new Scanner(System.in);
        String str2 = sc.nextLine();
        System.out.println(str == str2);
        System.out.println(str.equals(str2));

        String str3 = new String("abc");
        System.out.println(str == str3);
        System.out.println(str.equals(str3));
    }
}