项目：代码生成器
Swing与AWT的结合使用
Swing组件的使用
弹出菜单的使用
常用的使用
设计要求：
要求在一个应用程序中，能过录入类名，属性类型，属性名，来生成一个具体的类代码，代码中包含构造器及每个属性所对应的set和get方法。这部分代码要求显示在一个文本区中，这部分代码要求有复制，粘贴功能。
CodeCreate类，生成代码的JFame
MousePopMenu类，弹出菜单
VarCode类的属性封装类
运行效果如下：
初始界面
在下面的文本框中输入类名，类型，类变量，后点击增加类变量按钮，每个类变量就会在右面的区域显示出来。点击生成代码按钮后在主界面中生成了相应的代码。
点击鼠标右键的弹出菜单中有一系列的功能
代码如下：
public class VarCode
{
private String type;
private String field;
public void setType(String type)
{
this.type=type;
}
public String getType()
{
return type;
}
public void setField(String field)
{
this.field=field;
}
public String getField()
{
return this.field;
}
public static String toFirsttoUpper(String str)
{
String first=str.substring(0,1);
String last=str.substring(1);
return first.toUpperCase()+last;
}
}
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
public class MousePopMenu extends JPopupMenu
{
private JTextComponent jtc;
public MousePopMenu(JTextComponent jtxc)
{
Toolkit kit=Toolkit.getDefaultToolkit();
this.jtc=jtxc;
JMenuItem copy=new JMenuItem(\"ImageIcon(kit.getImage(\"018.gif\")));
copy.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
复制\
{
jtc.copy();
}
});
JMenuItem cut=new JMenuItem(\"ImageIcon(kit.getImage(\"018.gif\")));
cut.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
jtc.cut();
}
});
JMenuItem copyall=new JMenuItem(\"全部剪选中切并复\
制\
ImageIcon(kit.getImage(\"018.gif\")));
copyall.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
jtc.selectAll();
jtc.copy();
}
});
JMenuItem paste=new JMenuItem(\"ImageIcon(kit.getImage(\"018.gif\")));
paste.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
粘贴\
{
jtc.paste();
}
});
JMenuItem selectall=new JMenuItem(\"ImageIcon(kit.getImage(\"018.gif\")));
selectall.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
jtc.selectAll();
}
});
// setBorderPainted(false);
全部选中\
this.add(copy);
// this.addSeparator();
this.add(cut);
this.addSeparator();
this.add(selectall);
this.add(copyall);
this.addSeparator();
this.add(paste);
}
}
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
public class CodeCreate extends JFrame
{
private ArrayList fieldList;
private JPopupMenu pop;
public CodeCreate()
{
this.setTitle(\"代码生成器\");
fieldList=new ArrayList();
JPanel p=new JPanel();
p.setLayout(new BorderLayout());
final JTextArea area=new JTextArea(30,50);
area.setTabSize(4);
area.addMouseListener(new MouseAdapter()
{
public void mouseReleased(MouseEvent e)
{
// System.out.println(e.isPopupTrigger());
if(e.isPopupTrigger())
{
pop=new MousePopMenu(area);
// pop.setLabel(\"弹出菜单\");
pop.show(area, e.getX(),e.getY());
// System.out.println(pop.getLabel());
}
}
});
JScrollPane jsp=new JScrollPane(area);
JLabel lname=new JLabel(\"类名\");
final JTextField name=new JTextField(10);
JLabel ltype=new JLabel(\"类型\");
final JTextField type=new JTextField(10);
type.addMouseListener(new MouseAdapter()
{
public void mouseEntered(MouseEvent e)
{
type.setFocusable(true);
type.setFocusTraversalKeysEnabled(true);
type.selectAll();
}
});
JLabel lfield=new JLabel(\"类变量\");
final JTextField field=new JTextField(10);
final JTextArea fieldArea=new JTextArea();
fieldArea.setEditable(false);
fieldArea.setLineWrap(true);
fieldArea.setForeground(Color.pink);
JScrollPane fieldjsp=new JScrollPane(fieldArea);
JButton add=new JButton(\"增加类变量\");
JButton create=new JButton(\"生成代码\");
JButton clear=new JButton(\"清除所有\");
clear.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
fieldList.clear();
fieldArea.setText(\"\");
area.setText(\"\");
}
});
add.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
addField(field,type,fieldArea);
}
});
field.addKeyListener(new KeyAdapter()
{
public void keyReleased(KeyEvent e)
{
if(e.getKeyCode()==KeyEvent.VK_ENTER)
{
addField(field,type,fieldArea);
}
}
});
create.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
String classname=name.getText().trim();
String classf=\"public class \"+classname+\"\\n{\\n\";
String s=\"\";//所有的私有类变量
String method=\"\";//所有的set和get方法
String constr=\" public \"+classname+\"()\\n {\\n }\\n\";//空的构造器
String constrByarg=\"\";//构造器里面的参数
String methodInConstr=\"\";//构器里面调用的方法
for(int i=0;i{VarCode var=(VarCode)fieldList.get(i);
String varType=var.getType();
String varField=var.getField();
//类变量
s=s+\" private \"+varType+\" \"+varField+\";\\n\";
constrByarg=constrByarg+varType+\" \"+varField+\
methodInConstr=methodInConstr+\"
this.set\"+VarCode.toFirsttoUpper(varField)+\"(\"+varField+\");\\n\";
//方法
method=method+\" public void
set\"+VarCode.toFirsttoUpper(varField)+\"(\"+varType+\" \"+varField+\")\\n {\\n\"+\" \"+\"
this.\"+varField+\"=\"+varField+\";\\n }\\n\"
+\" public \"+varType+\" get\"+VarCode.toFirsttoUpper(varField)+\"()\\n {\\n\"+\"
\"+\"
return this.\"+varField+\";\\n
}\\n\";
}
constrByarg=constrByarg.substring(0,constrByarg.lastIndexOf(\
constrByarg=\" public \"+classname+\"(\"+constrByarg+\")\\n
+methodInConstr+\" }\\n\";
{\\n\"
String classl=\
area.setForeground(Color.blue);
area.setFont(new Font(\"Courier New\
area.setText(classf+s+constr+constrByarg+method+classl);
}
});
JPanel fieldPanel=new JPanel(new BorderLayout());
fieldPanel.add(fieldjsp,BorderLayout.CENTER);
fieldPanel.add(new JLabel(\"已搞定的类变量\"),BorderLayout.NORTH);
JPanel buttonPanel=new JPanel();
buttonPanel.add(lname);
buttonPanel.add(name);
buttonPanel.add(ltype);
buttonPanel.add(type);
buttonPanel.add(lfield);
buttonPanel.add(field);
buttonPanel.add(add);
buttonPanel.add(create);
buttonPanel.add(clear);
p.add(jsp,BorderLayout.CENTER);
p.add(fieldPanel,BorderLayout.EAST);
p.add(buttonPanel,BorderLayout.SOUTH);
this.setSize(800,650);
this.getContentPane().add(p);
}
public static void main(String ar[])
{
CodeCreate c=new CodeCreate();
c.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
c.setVisible(true);
}
private void addField(JTextField field,JTextField type,JTextArea fieldArea)
{
String str_field=field.getText().trim();
String str_type=type.getText().trim();
if(!isEmp(str_field)&& !isEmp(str_type))
{
VarCode var=new VarCode();
var.setField(str_field);
var.setType(str_type);
fieldList.add(var);
fieldArea.append(str_type+\" \"+str_field+\";\\n\");
field.setText(\"\");
}
}
public static boolean isEmp(String str)
{
if(str==null || str.trim().equals(\"\"))
{
return true;
}
else
{
return false;
}
}
}
