编写一个应用程序，用户分别从两个文本框输入学术的姓名和分数，程序按成绩排序将这些学生的姓名和分数显示在一个文本区中。

编写一个应用程序，用户分别从两个文本框输入学术的姓名和分数，程序按成绩排序将这些学生的姓名和分数显示在一个文本区中。

ScoreOrder.java

package setfrome;import java.awt.FlowLayout;import java.awt.Label;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.util.ArrayList;import java.util.Collections;import java.util.Iterator;import java.util.List;import javax.swing.Box;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JTextArea;import javax.swing.JTextField;public class ScoreOrder extends JFrame implements ActionListener {    JFrame jframe;    JTextField jtextfield1;    JTextField jtextfield2;    JTextArea jtextarea;    List<Student> list = new ArrayList<Student>();    public static void main(String[] args) {        // TODO Auto-generated method stub        ScoreOrder myJframe = new ScoreOrder();// 显示窗口    }    ScoreOrder() {        jframe = new JFrame("成绩排序");        jframe.setBounds(200, 100, 700, 400);        jframe.setLayout(new FlowLayout());        jtextfield1 = new JTextField(10);        jtextfield2 = new JTextField(10);        JButton jbutton = new JButton("插入");        Box box = Box.createHorizontalBox();        box.add(new Label("姓名:"));        box.add(jtextfield1);        box.add(new Label("分数:"));        box.add(jtextfield2);        box.add(Box.createHorizontalStrut(50));        box.add(jbutton);        jframe.add(box);        jtextarea = new JTextArea(40, 80);        jframe.add(jtextarea);        jframe.setVisible(true);        jbutton.addActionListener(this);    }    @Override    public void actionPerformed(ActionEvent e) {        // TODO Auto-generated method stub        jtextarea.setText("");        String name = jtextfield1.getText();        String grade = jtextfield2.getText();        if (!"".equals(name) && !"".equals(grade)) {            list.add(new Student(name, Float.parseFloat(grade)));            jtextarea.append("当前插入的信息为:姓名:" + name + "    成绩:" + grade + "\n");        }        Collections.sort(list);// 对list排序        Iterator<Student> iterator = list.iterator();        Student student;        while (iterator.hasNext()) {            student = iterator.next();            jtextarea.append("name:" + student.name + "    grade:" + student.grade + "\n");        }    }}class Student implements Comparable<Student> {    String name;    float grade;    public Student(String name, float grade) {        super();        this.name = name;        this.grade = grade;    }    @Override    public int compareTo(Student o) {        // TODO Auto-generated method stub        return (int) (o.grade - this.grade);    }}

运行结果：