import java.util.Scanner;


public class Test {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in); 
        System.out.println("请输入16进制数字:"); 
        String s = scanner.next(); 
        System.out.println(Integer.parseInt(s,16));   
    }
}

------解决方案--------------------
1
Java code
import java.util.Scanner;

public class test2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.printf("请输入16进制数字:");
        String s = scanner.next();
        String c = Integer.valueOf(s, 16).toString();
        System.out.println(String.valueOf(c));

    }
}

------解决方案--------------------

import java.util.Scanner;

public class Test {

   public static void main(String[] args) {
       Scanner scanner = new Scanner(System.in);
       System.out.printf("请输入16进制数字:");
       String s = scanner.next();
       String c = Integer.valueOf(s, 16).toString();
       System.out.println(String.valueOf(c));

   }
}

------解决方案--------------------
探讨


import java.util.Scanner; 

public class Test { 

    public static void main(String[] args) { 
        Scanner scanner = new Scanner(System.in); 
        System.out.printf("请输入16进制数字:"); 
        String s = scanner.next(); 
        String c = Integer.valueOf(s, 16).toString(); 
        System.out.println(String.valueOf(c)); 

    } 
}