为输入的三个字符进行排序

package chapter01;//包名

import java.util.*;

public class thelocationofcity//类名 {

public static void main(String[] args) {

    System.out.println("Please input three cities:");

    Scanner input=new Scanner(System.in);

    String s1=input.next();

    String s2=input.next();

    String s3=input.next();

    String max1;

    if(s1.compareTo(s2)<0)

    {

        max1=s1;s1=s2;s2=max1;

    }

    if(s1.compareTo(s3)<0)

    {

        max1=s1;s1=s3;s3=max1;

    }

    if(s2.compareTo(s3)<0)

    {

        max1=s2;s2=s3;s3=max1;

    }

    System.out.println("The three cities in alphabetical order are Atlanta Chicago Los"+s3+"   "+s2+"    "+s1+"     ");

}

}

Result：