摘要：来自: http://www.blogjava.net/zJun/archive/2006/06/28/55511.htmlLog4J的配置文件(Configuration File)就是用来设置记录器的级别、存放器和布局的，它可接key=value格式的设置或xml格式的设置信息。通过配置，可以创建出Log4J的运行环境。1. 配置文件Log4J配置文件的基本格式如下： #配置根Loggerlog4j.rootLogger=[ level ] ,appenderName1,appenderName2,…#配置日志信息输出目的地Appenderlog4j.appender.appenderN. 阅读全文

摘要：package com.han; import java.awt.BorderLayout; import java.awt.Container; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.util.Vector; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swi.. 阅读全文

摘要：package com.han; import java.awt.BorderLayout; import java.awt.Container; import java.util.Vector; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.JTextFie.. 阅读全文

摘要：package com.han; import java.awt.BorderLayout; import java.awt.Container; import java.awt.Point; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.InputEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.Win. 阅读全文

摘要：package com.han; import java.awt.Container; import java.awt.FlowLayout; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.util.Vector; import javax.swing.DefaultComboBoxModel; import javax.swing.JComboBox; import javax.swing.JFrame; /** * 捕获选项事件ItemEvent * @author... 阅读全文

摘要：package com.han; import java.awt.event.WindowEvent; import java.awt.event.WindowListener; import javax.swing.JFrame; /** * 捕获其他窗口事件 * @author HAN * */ public class WindowEvent_3 extends JFrame { /** * */ private static final long serialVersionUID = 9040264048222645786L; public Windo... 阅读全文

摘要：package com.han; import java.awt.Frame; import java.awt.event.WindowEvent; import java.awt.event.WindowStateListener; import javax.swing.JFrame; /** * 捕获窗口状态事件 * @author HAN * */ public class WindowEvent_2 extends JFrame { /** * */ private static final long serialVersionUID = -2809729... 阅读全文

摘要：package com.han; import java.awt.event.WindowEvent; import java.awt.event.WindowFocusListener; import javax.swing.JFrame; /** * 捕获窗口焦点事件 * @author HAN * */ public class WindowEvent_1 extends JFrame { /** * */ private static final long serialVersionUID = 6385933774053272194L; public ... 阅读全文

摘要：package com.han; import java.awt.Container; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.JFrame; /** * 监听鼠标事件 * 可以看出，当双击鼠标时，第一次的点击会触发一次单击事件 * @author HAN * */ public class MouseEvent_1 extends JFrame { /** * */ private static final long se... 阅读全文

摘要：package com.han; import java.awt.Container; import java.awt.FlowLayout; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JTextField; /** * 键盘事件监听(2)修改：使用监听键盘事件，而不是改写JTextFiel... 阅读全文

摘要：package com.han; import java.awt.Container; import java.awt.FlowLayout; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextField; /** * 键盘事件监听(2) * @author HAN * */ public class KeyEvent_2 extends JFrame { /** * */ private static final long serialVersionUID ... 阅读全文

摘要：package com.han; import java.awt.Container; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.SpringLayout; /** * 键盘事件监听(1) * @author HAN * *... 阅读全文

摘要：package com.han; import java.awt.BorderLayout; import java.util.Vector; import javax.swing.JFrame; /** * Provide a fixed column in a table. * * <code><p>public boolean isCellEditable(int row, int column) {<p> return getModel().isCellEditable(convertRowIndexToModel(row),<p> .. 阅读全文

摘要：package com.han; import java.awt.Container; import java.awt.FlowLayout; import javax.swing.JFrame; import javax.swing.JToggleButton; /** * 使用JToggleButton * @author HAN * */ public class JToggleButton_1 extends JFrame { /** * */ private static final long serialVersionUID = -4145861896... 阅读全文

摘要：package com.han; import javax.swing.JTextField; import javax.swing.text.AttributeSet; import javax.swing.text.BadLocationException; import javax.swing.text.Document; import javax.swing.text.PlainDocument; /** * Customized fields can easily be created by extending the model * and changing the de... 阅读全文

摘要：package com.han; import javax.swing.JTextField; import javax.swing.text.AttributeSet; import javax.swing.text.BadLocationException; import javax.swing.text.Document; import javax.swing.text.PlainDocument; /** * Customized fields can easily be created by extending the model * and changing the de... 阅读全文

摘要：info.html<%@ page language="java" contentType="text/html; charset=GBK" pageEncoding="GBK"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equ 阅读全文

摘要：<%@ page language="java" contentType="text/html; charset=GBK" pageEncoding="GBK"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv=" 阅读全文

摘要：servlet中的全局变量 protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { ServletContext application = req.getServletContext(); Integer access = (Integer) application.getAttribute("access"); if (access == null) { access = new Integer(0); .. 阅读全文

摘要：目录结构：WEB-INF(lib classes web.xml jsp文件)首先用户创建的servlet都是继承于httpservlet,用户可以通过重写service方法或者dopost,doget方法对用户请求做出响应。servlet生命周期：当我们说 servlet 具有生命周期时，只是指在调用 servlet 时，事情是以一种可预见的方式发生的。换言之，在任何 servlet 上创建的方法总是按相同的次序被调用的。下面是一个典型场景：1.用户在浏览器中输入一个 URL。Web 服务器配置文件确定该 URL 是否指向一个由运行于服务器上的 servlet 容器所管理的 servlet。 阅读全文