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来源：互联网发布：python 二叉树编辑：程序博客网时间：2024/06/14 22:40
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。
程序运行效果如图：
public class student implements Comparable<student>{            String name;      double grade;            public student(String name,double grade) {          // TODO Auto-generated constructor stub          this.name = name;          this.grade = grade;      }            public String getName() {          return name;      }      public void setName(String name) {          this.name = name;      }      public double getGrade() {          return grade;      }      public void setGrade(double grade) {          this.grade = grade;      }      public int compareTo(student o) {          // TODO Auto-generated method stub          if(this.grade<o.grade)          {              return 0;          }          return 1;      }  }import java.awt.Button;import java.awt.Label;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.util.ArrayList;  import java.util.Iterator;  import javax.swing.Box;import javax.swing.JFrame;import javax.swing.JTextArea;import javax.swing.JTextField;public class WindowBoxLayout extends JFrame{Box baseBox,boxV1,boxv2,boxV3,boxV4;      JTextField text1,text2;      Button btn2;      Button btn1;      ArrayList<student> list = new ArrayList<student>();      public WindowBoxLayout()      {          setLayout(new java.awt.FlowLayout());          init();          setVisible(true);          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);      }      void init(){          boxV1 = Box.createHorizontalBox();          boxV1.add(new Label("姓名"));          boxV1.add(Box.createHorizontalStrut(8));          text1 = new JTextField(8);          boxV1.add(text1);                              boxv2 = Box.createHorizontalBox();          boxv2.add(new Label("成绩"));          boxv2.add(Box.createHorizontalStrut(8));          text2=new JTextField(8);          boxv2.add(text2);                              boxV3 = Box.createHorizontalBox();          btn1 = new Button("添加");          boxV3.add(btn1);          boxV3.add(Box.createHorizontalStrut(8));          btn2 = new Button("排序");          boxV3.add(btn2);                    boxV4 = Box.createHorizontalBox();          JTextArea text3 = new JTextArea(9,20);          boxV4.add(text3);                    baseBox = Box.createVerticalBox();          baseBox.add(boxV1);          baseBox.add(Box.createVerticalStrut(10));          baseBox.add(boxv2);          baseBox.add(Box.createVerticalStrut(10));          baseBox.add(boxV3);          add(baseBox);          baseBox.add(Box.createVerticalStrut(10));          baseBox.add(boxV4);                              btn1.addActionListener(new ActionListener() {              public void actionPerformed(ActionEvent e) {                  // TODO Auto-generated method stub                  String name = text1.getText();                  double grade = Double.parseDouble(text2.getText());                  //System.out.println(name+"  "+grade);                  student s = new student(name, grade);                  //System.out.println(s.name+"  "+s.grade);                  if (list.isEmpty()==true) {                      list.add(0,s);                  }                  else                  {                      int i=0;                      while(i<list.size())                      {                          student student = list.get(i);                          System.out.println(student.name+"  "+student.grade);                          if(student.compareTo(s)==0)                          {                                                            break;                          }                          i++;                          System.out.println(i);                      }                      list.add(i,s);                                        }              }          });                 btn2.addActionListener(new ActionListener() {              public void actionPerformed(ActionEvent e) {                  // TODO Auto-generated method stub                  Iterator<student> it = list.iterator();                  while(it.hasNext())                  { student student =(student) it.next();                    text3.append("姓名："+student.name+" "+"成绩："+student.grade+"\n");                      //System.out.println(student.name+" "+student.grade+"\n");                                        }              }          });      }        }  import java.util.ArrayList;  @SuppressWarnings("unused")public class test {public static void main(String[] args) {// TODO Auto-generated method stub         WindowBoxLayout w = new WindowBoxLayout();          w.setBounds(100,100,310,350);          w.setTitle("成绩排序");                }  }
我的实验截图:
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