java 关于圆柱的比较

Question

求解如何将多个圆柱，根据他们的半径和高进行排序呢？ 求指点……

Answer 1

你可以参考一下，希望采纳支持一下
1、Student类

public class Student implements Comparable{
    //成员变量name
    private String name;

    //构造方法
    public Student(String name){
        this.name = name;
    }

    //get方法
    public String getName(){
        return this.name;
    }

    @Override
    public int compareTo(Object O) {
        Student s = (Student) O;
        return this.name.compareTo(s.name);
    }
}

StudentTest类

import java.util.Arrays;

public class StudentTest {
    public static void main(String[] args){
        Student[] StudentArray = {
                new Student("tom"),
                new Student("jerry"),
                new Student("daniel"),
                new Student("liang"),
                new Student("liu"),
                new Student("lin")
        };
        System.out.println("排序前：");
        for(int i=0;i<StudentArray.length;i++){
            if(i != StudentArray.length - 1)
                System.out.print(StudentArray[i].getName() + ",");
            else
                System.out.print(StudentArray[i].getName());
        }

        Arrays.sort(StudentArray);

        System.out.println("\n排序后：");
        for(int i=0;i<StudentArray.length;i++){
            if(i != StudentArray.length - 1)
                System.out.print(StudentArray[i].getName() + ",");
            else
                System.out.print(StudentArray[i].getName());
        }
    }
}

程序执行结果如下：

2.文字闪烁
FlashingText类

import javax.swing.*;

public class FlashingText extends JFrame implements Runnable {
    private JLabel jlblText;

    public FlashingText()  {
        jlblText = new JLabel("Welcome",JLabel.CENTER);
        add(jlblText);
        new Thread(this).start();

        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
        this.setBounds(400,300,300,300);
        this.setVisible(true);
    }

    @Override
    public void run() {
        try{
            while (true){
                if (jlblText.getText()==null)
                    jlblText.setText("Welcome");
                else
                    jlblText.setText(null);

                Thread.sleep(200);
            }
        }catch (InterruptedException ex){

        }
    }

    public static void main(String[] args) {
        FlashingText ft = new FlashingText();
    }
}

程序执行结果如下：