java编程题

你好，提问者：我用Java语言，给你写了一下，如图：测试不易，给个赞吧！public class Test {public static void main(String[] args) {for(int i=1;i<=7;i=i+2){for (int j=0;j0;i=i-2){for (int j=0;j

① public class DividedByZeroException extends Exception { private static final long serialVersionUID = 4420887449631055240L;public String getMessage() { return "除数不能为零";} } 上面是异常类DividedByZeroException的代码。② import java.util.Scanner;public class Test { SuppressWarnings("...

package com.Swring;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;import java.io.Reader;public class IO { public static void main(String[] args){ Reader fr = null;int length = 0;char[]...

seconds");} } public class Match { public static int length = 100;private static void begin(Rabbit r,Tortoise t) { r.run(length);t.run(length);} public static void main(String[] args) { Rabbit r = new Rabbit(20);Tortoise t = new Tortoise(5);begin(r,t);} } ...

基本符合你的要求，代码如下：class Complex { public Complex(double r, double i){ real = r;imag = i;} public Complex mul(Complex c2){ Complex c3 = new Complex(0, 0);c3.real = this.real * c2.real - this.imag * c2.imag;c3.imag = this.real * c2.imag + this.imag ...

import java.awt.BorderLayout;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JTextField;public class Login extends ...

public class Main { public static int reverseInt(int input) { int reversedNum = 0;while (input != 0) { reversedNum = reversedNum * 10 + input % 10;input = input / 10;} return reversedNum;} public static void main(String[] args) { int input = 352;int reversed = ...

public class Test{ public static void main(String[] args){ double s = 1.0;for(double i=2;i<=50;i++){ if(i%2==0){ s = s+(1/i);}else{ s = s-(1/i);} } System.out.println(s);} } 帮你写了，希望你喜欢。

1.在Java中，public、static和final是修饰符，用于定义类、方法和变量的特性。在声明一个List<User>类型的变量时，加上这些修饰符可以具有以下含义：public：表示该变量可以在其他类中访问。static：表示该变量是一个静态变量，可以在没有创建对象的情况下访问。final：表示该变量是一个常量，一旦被赋值后...

package com.ld.Demo;import java.util.Scanner;public class Test01 {public static void main(String[] args) {Scanner scanner=new Scanner(System.in);System.out.println("输入行数：");int num=scanner.nextInt();for(int i=1;i<=num;i++){for(int k=1;k<=num-i;k++){System....