题目2:编写一个应用程序,在主类Test_4类中,通过JDBC访问stu数据库,显示t_student表中的内容(表结构见表1),显示效果自己设计.之后,可根据显示的内容进行某条记录的删除(以id为条件)和修改(以id为条件,修改name字段值).程序运行结果如下 此为修改 连接mysql数据库,完成 import java.sql.*; import java.util.Scanner; public class Test_4 { public static void main(String[
题目1:编写一个应用程序,在主类Test1类中,创建两个链表List<E>对象,分别存储通过键盘输入的字符串内容--"chen","wang","liu","zhang"和"chen","hu","zhang"(假定输入的内容在各自的链表中没有重复的),输出显示这两个链表List<E>对象并集的结果. import java.util.*; p
public class Number { public static void main(String[] args) { String[] arr = { "HELLO", "JAVA", "PROGRAM", "EXCEPTION" }; double sum = 0; for (int i = 0; i < arr.length; i++) { sum += arr[i].toCharArray().length
最近复习C语言的时候看到网上有个C语言通讯录的小项目,于是看了下那个程序实现的大概的功能,然后自己也跟着做了个.代码还算简洁,贴上来给有需要的人. // // main.m // AdressBook // // Created by bestkayle on 15/8/8. // Copyright (c) 2015年 bestkayle. All rights reserved. // #import <Foundation/Foundation.h> ;//联系人数 int num;//
public class Test { private static Test test = new Test(); private Test(){}//构造方法私有化 private static Test test(){ return test; } public void run(){ System.out.println("run"); } public static void main(String[] args) { Test s = Test.test(); s.run(
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <
package a; public class SanWeiOuShu { public static void main(String[] args) { String str="123456789"; String a,b,c; int sum=0; for (int i = 1; i < 9; i+=2) { a=str.substring(i,i+1); String str1 = str.replace(a,""); for (int j = 0;
package com.hanqi.yzljs; public class yzljs { public static void main(String[] args) { final double PI = 3.1415926; double r =3.0; double c =2*PI*r; double s = PI*r*r; System.out.println("圆的周长="+c+" 圆的面积="+s); }
#include <stdio.h> #define N 80 int main(int argc, char *argv[]) { char a[N]; printf("Hello,where are you from?\n"); gets(a); ||strcmp(a,) printf("Wow,i am a Chinese,too.\nToday is a birthday of our country.\nLet's wish our motherland
