java小程序代码新程序 java小程序代码新程序怎么用

谁能给个JAVA的小程序代码，越小越好！

这是我晓得的最简单的java小程序代码了你可以看看:

package com.kenki.emp;

import javax.servlet.*;

import javax.servlet.http.*;

import java.io.*;

import java.util.*;

import java.sql.SQLException;

import java.sql.*;

public class emp extends HttpServlet {

private static final String CONTENT_TYPE = "text/html; charset=GBK";

//Initialize global variables

public void init() throws ServletException {

}

//Process the HTTP Get request

public void doGet(HttpServletRequest request, HttpServletResponse response) throws

ServletException, IOException {

response.setContentType(CONTENT_TYPE);

PrintWriter out = response.getWriter();

String code = request.getParameter("code");

String name = request.getParameter("name");

String pay = request.getParameter("pay");

System.out.println("empcode:" + code);

System.out.println("name:" + name);

System.out.println("pay:" + pay);

//创建驱动

new com.microsoft.jdbc.sqlserver.SQLServerDriver();

String strd =

"jdbc:microsoft:sqlserver://localhost:1433;databasename=emp_dates";

String username = "sa";

String pws = "";

try {

java.sql.Connection conn = java.sql.DriverManager.getConnection(

strd, username, pws);

String strs = "insert into emp values(?,?,?)";

java.sql.PreparedStatement pre = conn.prepareStatement(strs);

pre.setString(1, code);

pre.setString(2, name);

pre.setString(3, pay);

pre.execute();

pre.close();

conn.close();

//重定向至查询页面

out.println("成功保存！！");

response.sendRedirect("emp.html");

} catch (SQLException ss) {

ss.printStackTrace();

response.sendRedirect("/WebModule1/error.html");

}

}

//Process the HTTP Post request

public void doPost(HttpServletRequest request, HttpServletResponse response) throws

ServletException, IOException {

doGet(request, response);

}

//Clean up resources

public void destroy() {

}

}

相关问答

Q1: 编写一个java小程序！

public test_03(){

init();

}

public void init(){

JLabel jl_1=new JLabel("用户名");

JLabel jl_2=new JLabel("密码");

JTextField jtf=new JTextField();

JPasswordField jpf=new JPasswordField();

JButton button_1=new JButton("确定");

JPanel panel=new JPanel();

panel.setLayout(null);

jl_1.setBounds(30, 50, 50, 30);

jl_2.setBounds(30,90,50,30);

jtf.setBounds(100, 50, 100, 30);

jpf.setBounds(100, 90, 100, 30);

button_1.setBounds(110, 130, 80, 30);

panel.add(jl_1);

panel.add(jl_2);

panel.add(jtf);

panel.add(jpf);

panel.add(button_1);

this.add(panel);

this.setSize(300, 250);

this.setLocation(400, 300);

this.setVisible(true);

}

public static void main(String[] args) {

new test_03();

}

Q2: java一个简单小程序，求高手帮忙编写，万分感谢

class Ball {

public void play() {

System.out.println("玩球儿...");

}

}

class Football extends Ball {

public void play() {

System.out.println("使用足球运动");

}

}

class Basketball extends Ball {

public void play() {

System.out.println("使用篮球运动");

}

}

public class TestMain {

public static void main(String[] args) {

TestMain tm = new TestMain();

tm.testPlay();

}

public void testPlay() {

Ball ball = new Football();

ball.play();

ball = new Basketball();

ball.play();

}

}

/*

D:\javac TestMain.java

D:\java TestMain

使用足球运动

使用篮球运动

*/

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