java小系统，学生信息管理系统，java源码，实例

package view.jpanel; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Component; import java.awt.Container; import java.awt.Dimension; import java.awt.Insets; import java.awt.LayoutManager; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.ArrayList; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.UIManager; import action.JGroupPanelAction; /** * 类似QQ界面的组群管理面板 * * @author Administrator * */ public class JGroupPanel extends JPanel { /* 用来管理组的三个容器 */ private JPanel pNorth = new JPanel() { }; private JGroupPanelAction action=new JGroupPanelAction(); private JPanel pCenter = new JPanel(); private JPanel pSouth = new JPanel(); /* 当前全部组的集合 */ private ArrayList groupList = new ArrayList(); /* 是否已禁止添加组件 */ private boolean forbidFlag = false; /* 当前激活的组 */ private JGroupContainer activeGroup = null; transient ActionListener al = new ActionListener() { public void actionPerformed(ActionEvent e) { JButton bttTitle = (JButton) e.getSource(); expandGroup((JGroupContainer) bttTitle.getParent()); } }; private boolean hasCreateDefaultGroup = false; public JGroupPanel() { initComponents(); createDefaultGroup(); } private void initComponents() { this.setLayout(new BorderLayout()); this.add(pNorth, BorderLayout.NORTH); this.add(pCenter, BorderLayout.CENTER); this.add(pSouth, BorderLayout.SOUTH); pNorth.setLayout(new GroupLayout()); pCenter.setLayout(new BorderLayout()); pSouth.setLayout(new GroupLayout()); forbidFlag = true; } private void createDefaultGroup() { insertGroup(0, "学生管理"); addMember(0, buildLabel("添加学生信息")); addMember(0, buildLabel("修改学生信息")); addMember(0, buildLabel("删除学生信息")); getGroup(0).setMemberGap(10, 5); insertGroup(1, "老师管理"); addMember(1, buildLabel("添加老师信息")); addMember(1, buildLabel("修改老师信息")); addMember(1, buildLabel("删除老师信息")); getGroup(1).setMemberGap(10, 5); insertGroup(2, "院长管理"); addMember(2, buildLabel("添加院长信息")); addMember(2, buildLabel("修改院长信息")); addMember(2, buildLabel("删除院长信息")); getGroup(2).setMemberGap(10, 5); expandGroup(1); hasCreateDefaultGroup = true; } /** * 构造工具栏按钮的公用方法 * * @return */ public JLabel buildLabel(String name) { JLabel button = new JLabel(name); button.setToolTipText(name); // button.setRolloverEnabled(true); // button.setBorderPainted(true); button.setVerticalTextPosition(JButton.BOTTOM); button.setHorizontalTextPosition(JButton.CENTER); // 添加按钮事件 // button.addActionListener(action); return button; } /** * 展开组 * * @param name * String 组名 */ public void expandGroup(String name) { for (int i = getGroupCount() - 1; i >= 0; i--) { if (getGroupName(i).equals(name)) { expandGroup(i); } } } /** * 展开组 * * @param index * int 组的顺序号 */ public void expandGroup(int index) { expandGroup(getGroup(index)); } /** * 展开组 * * @param group * JGroupContainer 组 */ protected void expandGroup(JGroupContainer group) { pNorth.removeAll(); pCenter.removeAll(); pSouth.removeAll(); boolean hasAddCenter = false; for (int i = 0; i < groupList.size(); i++) { Component c = (Component) groupList.get(i); if (hasAddCenter) { pSouth.add(c); } else if (c == group) { pCenter.add(c, BorderLayout.CENTER); hasAddCenter = true; } else { pNorth.add(c); } } if (activeGroup != null) { activeGroup.collapse(); } activeGroup = group; activeGroup.expand(); pNorth.doLayout(); pCenter.doLayout(); pSouth.doLayout(); doLayout(); } /** * 收缩组 * * @param name * String 组名 */ public void collapseGroup(String name) { for (int i = getGroupCount() - 1; i >= 0; i--) { if (getGroupName(i).equals(name)) { collapseGroup(i); } } } /** * 收缩组 * * @param index * int 组的顺序号 */ public void collapseGroup(int index) { collapseGroup(getGroup(index)); } /** * 收缩组 * * @param group * JGroupContainer 组 */ protected void collapseGroup(JGroupContainer group) { if (group == activeGroup) { activeGroup.collapse(); activeGroup = null; } } /** * 添加组 * * @param name * String 组名 */ public void addGroup(String name) { this.insertGroup(getGroupCount(), name); } /** * 插入一个组 * * @param index * int 顺序号 * @param name * String 组名 * @param bg * Color 背景色 */ public void insertGroup(int index, String name, Color bg) { if (index < 0 || index > groupList.size()) { throw new ArrayIndexOutOfBoundsException("index:" + index + " >count:" + groupList.size()); } if (hasCreateDefaultGroup) { while (getGroupCount() > 0) { removeGroup(0); } hasCreateDefaultGroup = false; } int countNorth = pNorth.getComponentCount(); int countCenter = pCenter.getComponentCount(); int countSouth = pSouth.getComponentCount(); JGroupContainer group; if (index <= countNorth) { group = insertGroup(pNorth, index, name, bg); } else if (index <= countNorth + countCenter) { group = insertGroup(pCenter, index - countNorth, name, bg); } else if (index <= countNorth + countCenter + countSouth) { group = insertGroup(pSouth, index - countNorth - countCenter, name, bg); } else { group = insertGroup(pSouth, countSouth, name, bg); } group.getTitleButton().addActionListener(al); groupList.add(index, group); } /** * 插入一个组 * * @param index * int 顺序号 * @param name * String 组名 */ public void insertGroup(int index, String name) { insertGroup(index, name, UIManager.getColor("Desktop.background")); } /** * 插入一个组 * * @param p * JPanel 目标面板 * @param index * int 顺序号 * @param name * String 组名 * * * /** 插入一个组 * @param p * JPanel 目标面板 * @param index * int 顺序号 * @param name * String 组名 * @return JGroupContainer */ private JGroupContainer insertGroup(JPanel p, int index, String name, Color bg) { JGroupContainer group = new JGroupContainer(name, bg); p.add(group); return group; } /** * 删除一个组 * * @param index * int 顺序号 */ public void removeGroup(int index) { JGroupContainer c = (JGroupContainer) groupList.get(index); c.getParent().remove(c); c.getTitleButton().removeActionListener(al); } /** * 删除一个组 * * @param name * String 组名 */ public void removeGroup(String name) { for (int i = getGroupCount() - 1; i >= 0; i--) { if (getGroupName(i).equals(name)) { this.removeGroup(i); } } } /** * 设置组名 * * @param index * int 顺序号 * @param name * String 组名 */ public void setGroupName(int index, String name) { this.getGroup(index).setName(name); } /** * 取得组名 * * @param groupIndex * int 顺序号 * @return String 组名 */ public String getGroupName(int groupIndex) { return getGroup(groupIndex).getName(); } /** * 取得全部组名 * * @return String[] */ public String[] getGroupNames() { String sResult[] = new String[getGroupCount()