grade.java

是一个简单的JAVA小程序,是JAVA编程的最简单的程序

import javax.swing.JOptionPane;
public class Grade{
      String name;  //名字
      int score;       //成绩
      public static void main(String[] args){
        int n = Integer.parseInt(
            JOptionPane.showInputDialog("person num:")); //获取人数
        Grade [] grades = new Grade[n];  //开辟数组
        for(int i=0;i<n;i++) { //循环输入并输出成绩
             String name = JOptionPane.showInputDialog("name:"); 
             String score = JOptionPane.showInputDialog("score:");  
             grades[i] =  new Grade();
             grades[i].name = name;
             grades[i].score = Integer.parseInt(score);            
        }//For循环结束

        //排序
        for (int i = 0; i < grades.length; i++) {  //外层循环
            for (int j = 0; j < grades.length - i-1; j++) {  //内层比较
                if (grades[j].score > grades[j + 1].score) {    //比较
                    Grade t = grades[j];       //交换
                    grades[j] = grades[j + 1];
                    grades[j + 1] = t;
                }
            }//内层for循环结束
        }//外层for循环结束

        //输出结果
        for (int i = 0; i < grades.length; i++) {  
             System.out.println("name:"+grades[i].name
                  +"\tscore:"+grades[i].score);
        }



   }//End of Main
}//End Course4