【组合模式 实战（2）——空军指挥系统（Java、附代码）】
效果
运行下面代码中的AirforceGUI.java即可实现界面运行
（也实现了最小化、全屏（界面最大化）、退出。即右上角）
代码
由于代码量较大，不方便全部展示，目前已经上传到“我的资源”里面，需要的朋友可以下载哦！
//以展示运行的代码AirforceGUI.java为例：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Iterator;
/*===================================================================*/
/* User interface for Testing the Composite design pattern program */
/*===================================================================*/
public class AirforceGUI extends JFrame implements ItemListener{
private JScrollPane checkBoxPane, textPane;
private JSplitPane splitPane;
private JTextArea txtAirMission;
private JButton submitBtn, exitBtn;
private JPanel checkBoxPanel, btnPanel, choicePanel;
private JCheckBox[] airCheckBox;
private JCheckBox[] airUnitCheckBox;
private String[] airPlaneName ={
"F-15E-Strike-Eagle","F-16C/D-Fighting-Falcon","F22A-Rapter",
"B-1B-Lancer","B-2A-Spirit","B-52H-Stratofortress",
"C-130E/H-Hercules","C-130J-Super-Hercules","CV-22B-Osprey",
"E-9A", "EC-130H/J-Compass", "AirForce","Fighters",
"Bombers", "Transporters", "E-Planes"};
private String[] AirForceUnit = {
"SQUADRON", "GROUP", "WING"};
public final int SELECTED = ItemEvent.SELECTED;
public final int DESELECTED = ItemEvent.DESELECTED;
private static final String[] OPTION = {
"Solo", "Group"};
private JComboBox[] optComoBox=new JComboBox[11];
private int[] ckBoxStates;
private GridBagLayout gridbag = new GridBagLayout();
private GridBagConstraints gbc = new GridBagConstraints();
public AirforceGUI(){
super("Composite Pattern - Airforce");
ckBoxStates = new int[50];
setUpChoicePanel();
setUpScrollPanes();
}
private void setUpChoicePanel(){
submitBtn = new JButton("Submit");
exitBtn = new JButton("Exit");
submitBtn.addActionListener( new ButtonActionListener());
exitBtn.addActionListener( new ButtonActionListener());
JPanel btnPanel =new JPanel();
btnPanel.add(submitBtn);
btnPanel.add(exitBtn);
int numCheckBox = airPlaneName.length;
airCheckBox = new JCheckBox[numCheckBox];
airUnitCheckBox = new JCheckBox[3];
//Check boxes for selection of the airplanes
for(int m=0; m<numCheckBox; m++){
airCheckBox[m]= new JCheckBox(airPlaneName[m]);
airCheckBox[m].setMnemonic(KeyEvent.VK_C);
airCheckBox[m].addItemListener(this);
}
//Check boxes for selection of air units
for(int m=0; m<3; m++){
airUnitCheckBox[m]= new JCheckBox(AirForceUnit[m]);
airUnitCheckBox[m].setMnemonic(KeyEvent.VK_C);
airUnitCheckBox[m].addItemListener(this);
}
//Combobox for deciding on solo flight or not
for(int i=0;i<11;i++){
optComoBox[i]= new JComboBox(OPTION);
optComoBox[i].addItemListener(this);
}
checkBoxPanel = new JPanel();
checkBoxPanel.setLayout(gridbag);
for(int m=0; m<numCheckBox; m++)
checkBoxPanel.add(airCheckBox[m]);
for(int m=0; m<3; m++)
checkBoxPanel.add(airUnitCheckBox[m]);
for(int i=0;i<11;i++)
checkBoxPanel.add(optComoBox[i]);
gbc.insets.top = 0;
gbc.insets.bottom = 0;
gbc.insets.left = 0;
gbc.insets.right = 0;
gbc.anchor = GridBagConstraints.WEST;
add(0, 0, airCheckBox[11]);
add(1, 1, airCheckBox[12]);
add(2, 3, airCheckBox[0]);
add(2, 4, airCheckBox[1]);
add(2, 5, airCheckBox[2]);
add(1, 6, airCheckBox[13]);
add(2, 7, airCheckBox[3]);
add(2, 8, airCheckBox[4]);
add(2, 9, airCheckBox[5]);
add(1, 10, airCheckBox[14]);
add(2, 11, airCheckBox[6]);
add(2, 12, airCheckBox[7]);
add(2, 13, airCheckBox[8]);
add(1, 14, airCheckBox[15]);
add(2, 15, airCheckBox[9]);
add(2, 16, airCheckBox[10]);
add(3, 3, optComoBox[0]);
add(3, 4, optComoBox[1]);
add(3, 5, optComoBox[2]);
add(3, 7, optComoBox[3]);
add(3, 8, optComoBox[4]);
add(3, 9, optComoBox[5]);
add(3, 11, optComoBox[6]);
add(3, 12, optComoBox[7]);
add(3, 13, optComoBox[8]);
add(3, 15, optComoBox[9]);
add(3, 16, optComoBox[10]);
add(0, 17, airUnitCheckBox[0]);
add(0, 18, airUnitCheckBox[1]);
add(0, 19, airUnitCheckBox[2]);
choicePanel = new JPanel();
choicePanel.setMinimumSize(new Dimension(500, 300));
choicePanel.setLayout(new BorderLayout());
choicePanel.add(checkBoxPanel, "Center");
choicePanel.add(btnPanel, "South");
}
private void add(int m, int n, JComponent com ){
gbc.gridx = m;
gbc.gridy = n;
gridbag.setConstraints(com, gbc);
}
private void setUpScrollPanes(){
txtAirMission = new JTextArea(3,10);
txtAirMission.setBackground(Color.cyan);
txtAirMission.setText("选择军事单位：空军中队(SQUADRON)，空军团(GROUP)或者空军大队(WING)"
+ "\n组成固定单位的战斗力量。你也可以直接选择各种机型形成临时的编队"
+"\n飞行(在组合框中选Group)或者单飞（在组合框中选Solo）。");
checkBoxPane = new JScrollPane(choicePanel);
textPane = new JScrollPane(txtAirMission);
textPane.setMinimumSize(new Dimension(500, 100));
splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, checkBoxPane, textPane);
splitPane.setDividerLocation(470);
getContentPane().add(splitPane);
setSize(new Dimension(500, 500));
setVisible(true);
}
//========================================
// 新增加功能，需要理解本监听器所涉及的方法。
//========================================
class ButtonActionListener implements ActionListener{
public void actionPerformed(ActionEvent e) {
txtAirMission.setText("\n===Airforce New Mission===\n");
createAirGroup(e);
}
}
public void itemStateChanged(ItemEvent e){
Object source = e.getItemSelectable();
int state = e.getStateChange();
if (source == airCheckBox[11]) {
if(state == SELECTED){
for(int m=12; m<16; m++)
airCheckBox[m].setSelected(true);
}
else if (state == DESELECTED){
for(int m=12; m<16; m++)
airCheckBox[m].setSelected(false);
}
}
else if (source == airCheckBox[12]) {
if(state == SELECTED){
for(int m=0; m<3; m++)
airCheckBox[m].setSelected(true);
}
else if (state == DESELECTED){
for(int m=0; m<3; m++)
airCheckBox[m].setSelected(false);
}
}
else if (source == airCheckBox[0])
ckBoxStates[0]=state;
else if (source == airCheckBox[1])
ckBoxStates[1]=state;
else if (source == airCheckBox[2])
ckBoxStates[2]=state;
else if (source == airCheckBox[13]){
if(state == SELECTED){
for(int m=3; m<6; m++)
airCheckBox[m].setSelected(true);
}
else if (state == DESELECTED){
for(int m=3; m<6; m++)
airCheckBox[m].setSelected(false);
}
}
else if (source == airCheckBox[3])
ckBoxStates[3]=state;
else if (source == airCheckBox[4])
ckBoxStates[4]=state;
else if (source == airCheckBox[5])
ckBoxStates[5]=state;
else if (source == airCheckBox[14]){
if(state == SELECTED){
for(int m=6; m<9; m++)
airCheckBox[m].setSelected(true);
}
else if (state == DESELECTED){
for(int m=6; m<9; m++)
airCheckBox[m].setSelected(false);
}
}
else if (source == airCheckBox[6])
ckBoxStates[6]=state;
else if (source == airCheckBox[7])
ckBoxStates[7] = state;
else if (source == airCheckBox[8])
ckBoxStates[8]=state;
else if (source == airCheckBox[15]){
if(state == SELECTED){
airCheckBox[9].setSelected(true);
airCheckBox[10].setSelected(true);
}
else if (state == DESELECTED){
airCheckBox[9].setSelected(false);
airCheckBox[10].setSelected(false);
}
}
else if (source == airCheckBox[9])
ckBoxStates[9]=state;
else if (source == airCheckBox[10])
ckBoxStates[10]=state;
//== for air units
else if (source == airUnitCheckBox[0])
ckBoxStates[11]=state;
else if (source == airUnitCheckBox[1])
ckBoxStates[12]=state;
else if (source == airUnitCheckBox[2])
ckBoxStates[13]=state;
}
private void createAirGroup(ActionEvent e){
Airforce airCraft = null;
Airforce unit = null;
AirUnit airGroup = new AirUnit();
AirUnit airUnits = new AirUnit();
boolean isSolo = false;
int len = ckBoxStates.length;
String unitInfo = null;
if (e.getActionCommand().equals("Submit")) {
for(int m = 0; m < len; m++ ){
if ((m==0) && (ckBoxStates[0] == SELECTED)) {
airCraft = new F15();
if(optComoBox[0].getSelectedItem().equals("Solo"))
isSolo = true;
}
else if ((m==1) && (ckBoxStates[1] == SELECTED)){
airCraft = new F16();
if(optComoBox[1].getSelectedItem().equals("Solo"))
isSolo = true;
}
else if ((m==2) && (ckBoxStates[2] == SELECTED)){
airCraft = new F22();
if(optComoBox[2].getSelectedItem().equals("Solo"))
isSolo = true;
}
else if ((m==3) && (ckBoxStates[3] == SELECTED)){
airCraft = new B1B();
if(optComoBox[3].getSelectedItem().equals("Solo"))
isSolo = true;
}
else if ((m==4) && (ckBoxStates[4] == SELECTED)) {
airCraft = new B2A();
if(optComoBox[4].getSelectedItem().equals("Solo"))
isSolo = true;
}
else if ((m==5) && (ckBoxStates[5] == SELECTED)){
airCraft = new B52();
if(optComoBox[5].getSelectedItem().equals("Solo"))
isSolo = true;
}
else if ((m==6) && (ckBoxStates[6] == SELECTED)) {
airCraft = new C130E();
if(optComoBox[6].getSelectedItem().equals("Solo"))
isSolo = true;
}
else if ((m==7) && (ckBoxStates[7] == SELECTED)) {
airCraft = new C130J();
if(optComoBox[7].getSelectedItem().equals("Solo"))
isSolo = true;
}
else if ((m==8) && (ckBoxStates[8] == SELECTED)) {
airCraft = new CV22();
if(optComoBox[8].getSelectedItem().equals("Solo"))
isSolo = true;
}
else if ((m==9) && (ckBoxStates[9] == SELECTED)) {
airCraft = new E9A();
if(optComoBox[9].getSelectedItem().equals("Solo"))
isSolo = true;
}
else if ((m==10) && (ckBoxStates[10] == SELECTED)) {
airCraft = new EC130();
if(optComoBox[10].getSelectedItem().equals("Solo"))
isSolo = true;
}
//== for air units
else if ((m==11) && (ckBoxStates[11] == SELECTED)){
unit = new Squadron();
airUnits.attach(unit);
unitInfo = unit.getDescription();
}
else if ((m==12) && (ckBoxStates[12] == SELECTED)){
unit = new Group();
airUnits.attach(unit);
unitInfo = unit.getDescription();
}
else if ((m==13) && (ckBoxStates[13] == SELECTED)){
unit = new Wing();
airUnits.attach(unit);
unitInfo = unit.getDescription();
}
if( airCraft != null){
if(isSolo == false)
airGroup.attach(airCraft);
else{
String f = airCraft.fight();
txtAirMission.append("Solo Flight Mission: \n" + f + "\n");
}
airCraft = null;
isSolo = false;
}
} //end for loop
//Display Air Group Actions
if(airGroup.getSize() > 0){
String str = airGroup.fight();
txtAirMission.append("Mission with newly-formed unit: \n" + str + "\n");
}
if(airUnits.getSize() > 0){
String str = airUnits.fight();
txtAirMission.append("Mission with fixed unit: \n" + unitInfo + " \n");
txtAirMission.append("Aircrafts in this mission: \n" + str + "\n");
}
}
else if (e.getActionCommand().equals("Exit")) {
System.exit(1);
}
}
public static void main(String args[]){
try {
JFrame.setDefaultLookAndFeelDecorated(true);
//UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
}
catch (Exception evt) {
}
AirforceGUI frame = new AirforceGUI();
frame.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
frame.setSize(500, 600);
frame.setVisible(true);
}
}