AWT = Abstract Window Toolkit |
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ปรับปรุง : 2556-07-27 (ปรับคำอธิบายโค้ดใหม่) |
| OOP :: intro ch1-12 :: keyword & sign :: method calling :: series #1 :: series #2 :: series #3 :: pro_pmy |
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Introduction to frame
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import java.awt.*;
import java.awt.event.*;
public class x implements ActionListener {
public static void main(String[] args) {
Frame s = new Frame("Screen");
s.setSize(150,150);
s.setVisible(true);
s.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we){
System.exit(0);
}
});
}
// actionPerformed is abstract so it must be declared here
public void actionPerformed(ActionEvent a) { }
}
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import java.awt.*;
import java.awt.event.*;
public class x implements ActionListener {
static Button bclose = new Button("Exit");
public static void main(String[] args) {
Frame s = new Frame("Screen");
s.setSize(150,150);
s.setLayout(null);
s.setVisible(true);
s.setBackground(new Color(0, 255, 0));
bclose.setBounds(10,40,70,20);
s.add(bclose);
x myx = new x();
bclose.addActionListener(myx);
}
public void actionPerformed(ActionEvent a) {
System.out.println(a.getSource() + "1");
// java.awt.Button[button0,10,40,70x20,label=Exit]
System.out.println(bclose + "2");
if(a.getSource()==bclose) { System.exit(0); }
}
}
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Right frame
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import java.awt.*;
import java.awt.event.*;
public class x implements ActionListener {
Frame s = new Frame("Screen");
Button bclose = new Button("Exit");
public static void main(String[] args) {
new x().init();
}
public void init( ) {
s.setSize(150,150);
s.setLayout(null); // ถ้าไม่มี setLayout และ setVisible จะกลายเป็นปุ่มเต็มจอ
s.setVisible(true);
s.setBackground(Color.yellow);
bclose.setBounds(10,40,70,20);
s.add(bclose);
bclose.addActionListener(this);
}
public void actionPerformed(ActionEvent a) {
if(a.getSource()==bclose) { System.exit(0); }
}
}
// การ compile และ run ก็ใช้ javac และ java ตามปกติ
// คำสั่ง System.exit(0) หมายถึง Stops Java Virtual Machine (JVM) | |
import java.awt.*;
import java.awt.event.*;
public class x implements ActionListener {
Frame s = new Frame("Screen");
TextField txt = new TextField(20);
public static void main(String[] args) {
new x().burin();
}
public void burin( ) {
s.setSize(150,150);
s.setLayout(null);
s.setVisible(true);
txt.setBounds(10,30,100,20);
txt.setText("ข้อมูล");
s.add(txt);
s.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we){
System.exit(0);
}
});
}
public void actionPerformed(ActionEvent a) { }
}
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import java.awt.*;
import java.awt.event.*;
public class x implements ActionListener {
Frame s = new Frame("Screen");
Button bclose = new Button("Exit");
Button badd = new Button("Add");
TextField txt = new TextField(10);
public static void main(String[] args) {
new x().init();
}
public void init( ) {
s.setSize(150,150);
s.setLayout(null);
s.setVisible(true);
s.setBackground(Color.yellow);
txt.setBounds(10,40,70,20);
badd.setBounds(10,70,70,20);
bclose.setBounds(10,100,70,20);
s.add(txt);
s.add(badd);
s.add(bclose);
badd.addActionListener(this);
bclose.addActionListener(this);
txt.setText("0");
}
public void actionPerformed(ActionEvent a) {
String aa= Double.toString(Double.parseDouble(txt.getText()) +5);
//String aa= Integer.toString(Integer.parseInt(txt.getText()) +5);
if(a.getSource()==badd) { txt.setText(aa); }
if(a.getSource()==bclose) { System.exit(0); }
}
}
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New frame
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import java.awt.*;
import java.awt.event.*;
public class x implements ActionListener {
Frame s1 = new Frame("Screen1");
Frame s2 = new Frame("Screen2");
Button bclose = new Button("Exit");
Button bshow2 = new Button("show2");
public static void main(String[] args) {
new x().init();
}
public void init( ) {
s1.setSize(150,150);
s1.setLayout(null);
s1.setBackground(Color.yellow);
s2.setSize(150,150);
s2.setLayout(null);
s2.setBackground(Color.green);
bshow2.setBounds(10,70,70,20);
bclose.setBounds(10,100,70,20);
s1.add(bshow2);
s1.add(bclose);
bshow2.addActionListener(this);
bclose.addActionListener(this);
s1.setVisible(true);
}
public void actionPerformed(ActionEvent a) {
if(a.getSource()==bshow2) {
s1.setVisible(false);
s2.add(bclose);
bclose.addActionListener(this);
s2.setVisible(true);
}
if(a.getSource()==bclose) System.exit(0);
}
}
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JTable
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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class x implements ActionListener{
Frame f = new Frame("JTable");
public static void main(String args[]) {
new x().init();
}
void init() {
f.setSize(700,400);
f.setLocation(80,50);
f.setLayout(null);
f.setResizable(true);
f.setBackground(Color.pink);
showJtable(); // it should be before setVisible
f.setVisible(true);
}
public void actionPerformed(ActionEvent a) { }
public void showJtable() {
String TableHeader[] = {"no","name"};
String TableArr[][]=new String[50][2]; // row=6,column=2
try {
TableArr[0][0]=Integer.toString(1); // row=0 column=0
TableArr[1][0]=Integer.toString(2); // row=1 column=0
TableArr[0][1]="jack"; // row=0 column=1
TableArr[1][1]="jojo"; // row=1 column=1
JTable TitleTable;
JScrollPane DataInTable;
TitleTable = new JTable(TableArr,TableHeader);
TitleTable.setVisible(true);
TitleTable.setEnabled(false);
DataInTable = new JScrollPane(TitleTable);
DataInTable.setBounds(5,50,600,200); // left, top,width,height
f.add(DataInTable);
} catch (Exception e){ System.err.println(e); }
}
}
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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class y implements ActionListener{
Frame f = new Frame("JTable");
JTable TitleTable;
TextField txt = new TextField(10);
public static void main(String args[]) {
new y().init();
}
void init() {
f.setSize(700,400);
f.setLocation(80,50);
f.setLayout(null);
f.setBackground(Color.pink);
txt.setBounds(1,40,70,20);
f.add(txt);
showJtable(); // it should be before setVisible
f.setVisible(true);
}
public void actionPerformed(ActionEvent a) {
}
public void showJtable() {
String TableHeader[] = {"no","name"}; // not show in header
String TableArr[][]=new String[3][2]; // row=6,column=2
try {
TableArr[0][0]=Integer.toString(1); // row=0 column=0
TableArr[1][0]=Integer.toString(2); // row=1 column=0
TableArr[0][1]=ThaiUtil.ASCII2Unicode("ที่นี่"); // row=0 column=1
TableArr[1][1]=ThaiUtil.ASCII2Unicode("ดูนี่"); // row=1 column=1
TitleTable = new JTable(TableArr,TableHeader);
TitleTable.setVisible(true);
TitleTable.setEnabled(true); // true = can change
TitleTable.setBounds(5,80,600,300);
f.add(TitleTable);
TitleTable.getSelectionModel().addListSelectionListener(
new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting()) {
System.out.println(TitleTable.getSelectedRow());
System.out.println(TitleTable.getSelectedColumn());
System.out.println(TitleTable.getModel().getValueAt(0, 1));
txt.setText(Integer.toString(TitleTable.getSelectedRow()));
}
}
});
} catch (Exception e){ System.err.println(e); }
}
}
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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
// @see http://stackoverflow.com/q/12301923/230513
public class z extends JPanel {
private static final String SHOW = "Show";
private DefaultTableModel model = new DefaultTableModel();
private JTable table = new JTable(model);
private JButton button = new JButton(new AbstractAction(SHOW) {
public void actionPerformed(ActionEvent e) {
System.out.println(table.getSelectedRow());
}
});
public z() {
model.addColumn("Column");
for (int i = 0; i < 16; i++) { model.addRow(new Object[]{i}); }
table.setPreferredScrollableViewportSize(new Dimension(160, 100));
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
table.getSelectionModel().addListSelectionListener(
new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
if (!e.getValueIsAdjusting()) {
button.setText(SHOW + " " + table.getSelectedRow());
}
}
});
this.add(new JScrollPane(table));
table.setRowSelectionInterval(3, 3);
}
private void display() {
JFrame f = new JFrame("TableSelection");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(this, BorderLayout.CENTER);
f.add(button, BorderLayout.SOUTH);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
new z().display();
}
});
}
}
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ThaiUtil
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public class ThaiUtil {
/* Creates a new instance of ThaiUtil
http://www.narisa.com/forums/index.php?showtopic=2738 */
public static String Unicode2ASCII(String unicode) {
StringBuffer ascii = new StringBuffer(unicode);
int code;
for(int i = 0; i < unicode.length(); i++) {
code = (int)unicode.charAt(i);
if ((0xE01<=code) && (code <= 0xE5B ))
ascii.setCharAt( i, (char)(code - 0xD60));
}
return ascii.toString();
}
public static String ASCII2Unicode(String ascii) {
StringBuffer unicode = new StringBuffer(ascii);
int code;
for(int i = 0; i < ascii.length(); i++) {
code = (int)ascii.charAt(i);
if ((0xA1 <= code) && (code <= 0xFB))
unicode.setCharAt( i, (char)(code + 0xD60));
}
return unicode.toString();
}
}
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import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class x implements ActionListener{
Connection connection;
Statement statement;
TextArea text =new TextArea();
String sourceURL = "jdbc:odbc:student";
Frame f = new Frame("select");
Button bexit = new Button("Exit");
// 01- main
public static void main(String args[]) {
new x().init();
}
// 02 - init
void init() {
f.setSize(700,400);
f.setLocation(80,50);
f.setLayout(null);
f.setResizable(true);
f.setBackground(Color.pink);
f.add(bexit);
f.add(text);
text.setBounds(115,30,200,300);
bexit.setBounds(10,30,100,30);
bexit.addActionListener(this);
showRegisRecord();
f.setVisible(true);
}
// 03 - rpt01
public x() {
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
connection = DriverManager.getConnection(sourceURL);
statement = connection.createStatement();
} catch (SQLException sqle) {
System.err.println("Error creating connection");
} catch (ClassNotFoundException cnfe) {
System.err.println(cnfe.toString());
}
}
// 04 - actionPerformed
public void actionPerformed(ActionEvent a) {
if (a.getSource()== bexit) System.exit(0);
}
// 05 - showRegisRecord
public void showRegisRecord() {
try {
statement = connection.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_READ_ONLY);
ResultSet ShowAll = statement.executeQuery("SELECT * FROM reg_student");
String tmp;
ShowAll.last();
int crow=ShowAll.getRow();
ShowAll.first();
if (crow>=1) while (!ShowAll.isAfterLast()) {
tmp=ShowAll.getString(3);
text.setText(tmp.toString()+ "\n" + text.getText() );
ShowAll.next();
}
} catch (SQLException sqle) {
System.err.println("\nSQLException:\n");
}
} // end showRegisRecord
} // end class
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| "Imagination is more important than knowledge" - Albert Einstein |