我試圖要求用戶輸入，然後打印出來，但它不打印

Question

我希望它打印：「你的分數是第一」，但它不會。我正在使用toString()，我完全是Java的初學者。如果有人有任何想法，請告訴我。

我的代碼：

import java.util.*; 
public class Person implements Comparable<Person> 
{ 
    String name; 
    int age; 

    public Person(String name, int i) 
    { 
     this.name = name; 
     this.age = i; 
    } 

    public String getName() 
    { 
     return name; 
    } 

    public int getAge() 
    { 
     return age; 
    } 

    public String toString() 
    { 

     return name + " : " + age; 
    } 

    /* 
    ** Implement the natural order for this class 
    */ 
    public int compareTo(Person p) 
    { 
     return getName().compareTo(p.getName()); 
    } 

    static class AgeComparator implements Comparator<Person> 
    { 
     public int compare(Person p1, Person p2) 
     { 
      int age1 = p1.getAge(); 
      int age2 = p2.getAge(); 

      if (age1 == age2) 
       return 0; 
      else if (age1 > age2) 
       return 1; 
      else 
       return -1; 
     } 
    } 

    public static void main(String[] args) 
    { 
     Scanner input = new Scanner(System.in); 
     int pie; 
     Scanner input1 = new Scanner(System.in); 
     String ass; 
     pie = input.nextInt(); 
     System.out.println("Your Score is " + pie); 
     ass = input1.nextLine(); 
     System.out.println("Your name is " + ass); 

     List<Person> people = new ArrayList<Person>(); 
     people.add(new Person("Homer", 1)); 
     people.add(new Person("Marge", 35)); 
     people.add(new Person("Bart", 15)); 
     people.add(new Person(ass, pie)); 

     // Sort by natural order 

     Collections.sort(people); 
     System.out.println("Sort by Natural order"); 
     System.out.println("\t" + people); 

     // Sort by reverse natural order 

     Collections.sort(people, Collections.reverseOrder()); 
     System.out.println("Sort by reverse natural order"); 
     System.out.println("\t" + people); 

     // Use a Comparator to sort by age 

     Collections.sort(people, new Person.AgeComparator()); 
     System.out.println("Sort using Age Comparator"); 
     System.out.println("\t" + people); 

     // Use a Comparator to sort by descending age 

     Collections.sort(people, 
      Collections.reverseOrder(new Person.AgeComparator())); 
     System.out.println("Sort using Reverse Age Comparator"); 
     System.out.println("\t" + people); 
    } 
} 

我想到的是： 它打印「你的分數是：」第一 和我可以進入我想要的信息。

Answer 1

當你按下後，你進入輸入Score，你應該閱讀'nextLine'來等待下一個輸入。

 Scanner input = new Scanner(System.in); 
     int pie = input.nextInt(); 
     input.nextLine(); 
     String ass = input.nextLine(); 
     input.close(); 
     System.out.println("Your Score is " + pie); 
     System.out.println("Your name is " + ass); 

注意：最好在讀取流之後關閉掃描儀。

Answer 2

I want it to print: "Your score is first", but it won't. 

打印消息之前它不打印的第一，因爲你都在問scanner爲輸入

解決方案：

 System.out.println("Your Score is " + pie); 
     pie = input.nextInt(); 
     System.out.println("Your name is " + ass); 
     ass = input1.nextLine();