?? 第二十五章例子.txt
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a=new Object[30][6];
table=new JTable(a,columnName);
setSize(300,300);setVisible(true);
button=new JButton("確定");
addWindowListener(new WindowAdapter()
{public void windowClosing(WindowEvent e)
{ System.exit(0);}} );
button.addActionListener(this);
p_bar=new JProgressBar(JProgressBar.VERTICAL,0,50);
p_bar.setStringPainted(true) ;
container=getContentPane();
container.add(button,BorderLayout.SOUTH);
container.add(new JScrollPane(table),BorderLayout.CENTER);
container.add(p_bar,BorderLayout.WEST);
}
public void actionPerformed(ActionEvent evt)
{if(evt.getSource()==button)
{int i=0;
try{Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); }
catch(ClassNotFoundException e){}
try
{con=DriverManager.getConnection("jdbc:odbc:redsun","snow","ookk");
sql=con.createStatement();
rs=sql.executeQuery("SELECT * FROM chengjibiao");
while(rs.next())
{xuehao=rs.getString(1); name=rs.getString(2); date =rs.getDate(3);
math=rs.getInt("數學"); physics=rs.getInt("物理"); english=rs.getInt("英語");
a[i][0]=xuehao;a[i][1]=name; a[i][2]=date; a[i][3]=String.valueOf(math);
a[i][4]=String.valueOf(physics); a[i][5]=String.valueOf(english);
i++;
p_bar.setValue(i);p_bar.setString("查詢了"+i+"條記錄");
} pack();
con.close();
}
catch(SQLException e1) {}
}
}
}
public class Example25_27
{ public static void main(String args[])
{ResultWin win=new ResultWin(); win.pack();
}
}
25-例子28
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Example24_28 extends JApplet
{ Container con;
public void init()
{con=getContentPane();
JMenuBar menubar=new JMenuBar();//菜單條對象
con.add(menubar,BorderLayout.NORTH);//增加菜單條到內容窗格
JMenu fileMenu=new JMenu("文件"); //3個菜單對象
JMenu editMenu=new JMenu("編輯");
JMenu helpMenu=new JMenu("幫助");
JMenuItem item1=new JMenuItem("打開");
JMenuItem item2=new JMenuItem("保存"); //創建6個菜單項。
fileMenu.add(item1); fileMenu.add(item2);
menubar.add(fileMenu); menubar.add(editMenu);
menubar.add(helpMenu);
}
}
25-例子29
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class MenuWin extends JFrame implements ActionListener
{ Container con;JMenuItem item1;
MenuWin()
{con=getContentPane();
setSize(300,250);setVisible(true);
JMenuBar menubar=new JMenuBar();//菜單條對象
con.add(menubar,BorderLayout.NORTH);//增加菜單條到內容窗格
JMenu fileMenu=new JMenu("文件"); //3個菜單對象
JMenu editMenu=new JMenu("編輯");
JMenu helpMenu=new JMenu("幫助");
item1=new JMenuItem("打開");
JMenuItem item2=new JMenuItem("保存"); //創建6個菜單項。
fileMenu.add(item1); fileMenu.add(item2);
menubar.add(fileMenu); menubar.add(editMenu);
menubar.add(helpMenu);
item1.addActionListener(this);
}
public void actionPerformed(ActionEvent e)
{if(e.getSource()==item1)
{JFileChooser c=new JFileChooser();
c.showOpenDialog(null);
}
}
}
public class Example25_29
{static void main(String args[])
{MenuWin win=new MenuWin() ;win.pack();
}
}
25-例子30
import javax.swing.*;import java.awt.*;
import java.awt.event.*;
class ToolWin extends JFrame implements ActionListener
{ JButton button1,button2; JToolBar bar; Container con;
ToolWin()
{con=getContentPane();
setSize(300,250);setVisible(true);
Icon open_icon =new ImageIcon("open.gif");
Icon save_icon =new ImageIcon("save.gif");
button1=new JButton(open_icon); button2=new JButton(save_icon);
bar=new JToolBar();//工具條對象
bar.add(button1);bar.add(button2);
con.add(bar,BorderLayout.NORTH);
button1.addActionListener(this);
button1.setToolTipText("open");//設置組件的提示文字
button2.setToolTipText("save");
}
public void actionPerformed(ActionEvent e)
{if(e.getSource()==button1)
{JFileChooser c=new JFileChooser();
c.showOpenDialog(null);
}
}
}
public class Example25_30
{static void main(String args[])
{ToolWin win=new ToolWin() ;win.pack();
}
}
25-例子31
import javax.swing.*;import javax.swing.tree.*;
import java.awt.*;
public class Mytree extends JApplet
{ public void init()
{Container con=getContentPane();
DefaultMutableTreeNode root=new DefaultMutableTreeNode("c:\\");//樹的根節點。
DefaultMutableTreeNode t1=new DefaultMutableTreeNode("dos");//節點。
DefaultMutableTreeNode t2=new DefaultMutableTreeNode("java");//節點。
DefaultMutableTreeNode t1_1=new DefaultMutableTreeNode("applet");
DefaultMutableTreeNode t1_2=new DefaultMutableTreeNode("jre");
root.add(t1);root.add(t2);
t1.add(t1_1);t1.add(t1_2);//t1_1,t1_2成為t1的子節點。
JTree tree =new JTree(root); //創建根為root的樹。
JScrollPane scrollpane=new JScrollPane(tree);
con.add(scrollpane);
}
}
25-例子32
import javax.swing.*;
import javax.swing.tree.*;import java.awt.*;
import java.awt.event.*;import javax.swing.event.*;
public class Mytree2 extends JFrame implements TreeSelectionListener
{ JTree tree=null;JTextArea text=new JTextArea(20,20);
Mytree2()
{Container con=getContentPane();
DefaultMutableTreeNode root=new DefaultMutableTreeNode("同學通訊錄");
DefaultMutableTreeNode t1=new DefaultMutableTreeNode("大學同學");
DefaultMutableTreeNode t2=new DefaultMutableTreeNode("研究生同學");
DefaultMutableTreeNode t1_1=new DefaultMutableTreeNode("董明光");
DefaultMutableTreeNode t1_2=new DefaultMutableTreeNode("李曉");
DefaultMutableTreeNode t2_1=new DefaultMutableTreeNode("王光明");
DefaultMutableTreeNode t2_2=new DefaultMutableTreeNode("代學才");
root.add(t1);root.add(t2);
t1.add(t1_1);t1.add(t1_2); t2.add(t2_1);t2.add(t2_2);
tree =new JTree(root);
JScrollPane scrollpane=new JScrollPane(text);
JSplitPane splitpane=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
true,tree,scrollpane);
tree.addTreeSelectionListener(this);
con.add(splitpane);
addWindowListener(new WindowAdapter()
{ public void windowClosing(WindowEvent e)
{System.exit(0);} });
setVisible(true);setBounds(70,80,200,300);
}
public void valueChanged(TreeSelectionEvent e)
{ if(e.getSource()==tree)
{DefaultMutableTreeNode node=
(DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
if(node.isLeaf())
{ String str=node.toString();
if(str.equals("董明光"))
{text.setText(str+":聯系電話：0411-4209876");}
else if(str.equals("李曉"))
{text.setText(str+":聯系電話：010-62789876");}
else if(str.equals("王光明"))
{text.setText(str+":聯系電話：0430-63596677");}
else if(str.equals("代學才"))
{text.setText(str+":聯系電話：020-85192789");}
}
else
{text.setText(node.getUserObject().toString());
}
}
}
}
class Example32
{public static void main(String args[])
{ Mytree2 win=new Mytree2();win.pack();
}
}
25-例子33
import javax.swing.*;import javax.swing.tree.*;
import java.awt.*;
public class Mytree3 extends JApplet
{ public void init()
{Container con=getContentPane();
DefaultMutableTreeNode root=new DefaultMutableTreeNode("c:\\");//樹的根節點。
DefaultMutableTreeNode t1=new DefaultMutableTreeNode("dos");//節點。
DefaultMutableTreeNode t2=new DefaultMutableTreeNode("java");//節點。
DefaultMutableTreeNode t1_1=new DefaultMutableTreeNode("wps");
DefaultMutableTreeNode t1_2=new DefaultMutableTreeNode("epg");
DefaultMutableTreeNode t2_1=new DefaultMutableTreeNode("applet");
DefaultMutableTreeNode t2_2=new DefaultMutableTreeNode("jre");
root.add(t1);root.add(t2);
t1.add(t1_1);t1.add(t1_2);
t2.add(t2_1);t2.add(t2_2);
JTree tree =new JTree(root); //創建根為root的樹。
DefaultTreeCellRenderer render=new DefaultTreeCellRenderer();
render.setLeafIcon(new ImageIcon("leaf.gif"));
render.setBackground(Color.yellow);
render.setClosedIcon(new ImageIcon("close.gif"));
render.setOpenIcon(new ImageIcon("open.gif"));
render.setTextSelectionColor(Color.red);
render.setTextNonSelectionColor(Color.green);
render.setFont(new Font("TimeRoman",Font.BOLD,16));
tree.setCellRenderer(render);
JScrollPane scrollpane=new JScrollPane(tree);
con.add(scrollpane);
}
}
25-例子34
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;import java.util.*;
class Classmate extends JFrame
{ JTree tree=null; DefaultMutableTreeNode root;
BufferedReader in; FileReader file;
Classmate()
{Container con=getContentPane();
String s=null;
try {File f=new File("通訊錄.txt");
file=new FileReader(f);
in=new BufferedReader(file);
}
catch(FileNotFoundException e){}
try{s=in.readLine(); //讀取第一行并用它創建根節點。
root=new DefaultMutableTreeNode(s);
}
catch(IOException exp){}
try
{ while((s=in.readLine())!=null&&(s.startsWith("%")))
{ s=in.readLine();
DefaultMutableTreeNode 同學種類=new DefaultMutableTreeNode(s);
root.add(同學種類);
while((s=in.readLine())!=null&&!(s.startsWith("end")))
{ StringTokenizer tokenizer=new StringTokenizer(s,"#");
String temp=tokenizer.nextToken();
DefaultMutableTreeNode 同學種類_姓名=new DefaultMutableTreeNode(temp);
同學種類.add(同學種類_姓名);
while(tokenizer.hasMoreTokens())
{同學種類_姓名.add(new DefaultMutableTreeNode(tokenizer.nextToken()));
}
}
}
}
catch(IOException exp){}
tree =new JTree(root);
JScrollPane scrollpane=new JScrollPane(tree);
con.add(scrollpane);
addWindowListener(new WindowAdapter()
{ public void windowClosing(WindowEvent e)
{System.exit(0);} });
setVisible(true);setBounds(70,80,200,300);
}
}
public class Example34
{public static void main(String args[])
{ Classmate win=new Classmate();win.pack();}
}
25-例子35
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.io.*;
class Remember extends JFrame implements TreeSelectionListener,ActionListener
{ JTree tree=null;JTextArea text=new JTextArea(" ",20,20);int i=0;
DefaultMutableTreeNode root;JButton b_save=new JButton("保存日志"),
b_del=new JButton("刪除日志");
DefaultMutableTreeNode month[]=new DefaultMutableTreeNode[13];
Remember()
{Container con=getContentPane();
DefaultMutableTreeNode root=new DefaultMutableTreeNode("日歷記事本");
for(i=1;i<=12;i++)
{month[i]=new DefaultMutableTreeNode(""+i+"月");
root.add(month[i]);
}
for(i=1;i<=12;i++)
{ if(i==1||i==3||i==5||i==7||i==8||i==10||i==12)
{ for(int j=1;j<=31;j++)
month[i].add(new DefaultMutableTreeNode(j+"日"));
}
else if(i==4||i==6||i==9||i==11)
{ for(int j=1;j<=30;j++)
month[i].add(new DefaultMutableTreeNode(j+"日"));
}
else
{ for(int j=1;j<=28;j++)
month[i].add(new DefaultMutableTreeNode(j+"日"));
}
}
b_save.addActionListener(this); b_del.addActionListener(this);
tree =new JTree(root);
JPanel p=new JPanel();p.setLayout(new BorderLayout());
JScrollPane scrollpane_1=new JScrollPane(text);
p.add(scrollpane_1,BorderLayout.CENTER);
JPanel p_1=new JPanel();p_1.add(b_save);p_1.add(b_del);
p.add(p_1,BorderLayout.NORTH);
JScrollPane scrollpane_2=new JScrollPane(tree);
JSplitPane splitpane=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,
true,scrollpane_2,p);
tree.addTreeSelectionListener(this);
con.add(splitpane);
addWindowListener(new WindowAdapter()
{ public void windowClosing(WindowEvent e)
{System.exit(0);} });
setVisible(true);setBounds(70,80,200,300);
}
public void valueChanged(TreeSelectionEvent e)
{ text.setText(" ");
if(e.getSource()==tree)
{DefaultMutableTreeNode node=
(DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
if(node.isLeaf())
{ String str=node.toString();
for(int i=0;i<=12;i++)
{if(node.getParent()==month[i])
{try
{ String temp=null;
File f=new File(node.getParent().toString()+str+".txt");
FileReader file=new FileReader(f);
BufferedReader in=new BufferedReader(file);
while((temp=in.readLine())!=null)
text.append(temp+'\n');
file.close();in.close();
}
catch(FileNotFoundException e1){}
catch(IOException e1){}
}
}
}
}
}
public void actionPerformed(ActionEvent e)
{if(e.getSource()==b_save)
{ DefaultMutableTreeNode node=
(DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
String str=node.toString();
if(node.isLeaf())
{try
{ File f=new File(node.getParent().toString()+str+".txt");
FileWriter tofile=new FileWriter(f);
BufferedWriter out=new BufferedWriter(tofile);
out.write(text.getText(),0,(text.getText()).length());
out.flush();
tofile.close();out.close();
}
catch(FileNotFoundException e1){}
catch(IOException e1){}
}
}
else if(e.getSource()==b_del)
{ DefaultMutableTreeNode node=
(DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
String str=node.toString();
if(node.isLeaf())
{try
{ File f=new File(node.getParent().toString()+str+".txt");
FileWriter tofile=new FileWriter("gxy.bat");
BufferedWriter out=new BufferedWriter(tofile);
String temp1="del "+f.getAbsoluteFile().toString();
out.write(temp1,0,temp1.length());
out.newLine();
out.flush();
tofile.close();out.close();
}
catch(IOException e1){}
}
del();
}
}
void del()
{try{ Runtime ce=Runtime.getRuntime();
ce.exec("gxy.bat");
}
catch(IOException e1){}
}
}
public class Example35
{public static void main(String args[])
{Remember win=new Remember();win.pack();
}
}
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