博文
java中的全屏幕模式(2006-10-09 16:21:00)
摘要：什么时候会用到全屏幕模式？ 也许用到的机会很少，但JDK还是为我们提供了这个的功能。像许多软件中的打印预览功能，还有某些文本编辑器中为了获得更大的编辑画面，也用到了全屏幕模式，如果你有兴趣写一个像ACDSee这样的软件，使用全屏幕模式可以让用户看到更大的图片画面。 如何使用全屏幕模式？ 关键是java.awt.*里面的两个与显示设备有关的类：GraphicsEnvironment和GraphicsDevice。 GraphicsEnvironment为Java应用程序提供了特定平台的 GraphicsDevice 对象和 Font 对象集合。这些GraphicsDevice可以是各种本机和远端机器的资源，如屏幕、打印机或者是Image Buffer,甚至是Graphics2D绘图方法的目标对象。 而GraphicsDevice就是指特定的图形环境了，如屏幕和打印设备等。这样，我们就可以用GraphicsDevice来操纵屏幕了。GraphicsDevice提供的setFullScreenWindow()方法就是设置全屏幕用的。 由于GraphicsEnvironment的构造器是受保护的(protected)，我们不能直接构造一个 GraphicsEnvironment对象来获得GraphicsDevice对象。幸好它提供了getLocalGraphicsEnvironment()方法，用来获得一个GraphicsEnvironment实例： GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); 有了GraphicsEnvironment可以调用getDefaultScreenDevice方法获得当前的屏幕设备了： GraphicsDevice gd = ge.getDefaultScreenDevice(); 自己动手体验一下 有了上面的简介，写一个实例来体验一下吧： import java.awt.*; import java.awt.event.*; import javax.swing.*; public class FullScreenTest { public static void main(String[] ......
JSplitPane(2006-05-21 09:44:00)
摘要：
import javax.swing.*;import java.awt.Dimension;public class JSplitPaneDemo{ public static void main (String[] args) { JButton button = new JButton ("button"); JLabel label = new JLabel ("label"); JSplitPane splitPane = new JSplitPane (); splitPane.setOneTouchExpandable (true);//是该分隔面板的分隔条显示出箭头 splitPane.setContinuousLayout (true); splitPane.setPreferredSize (new Dimension (500,600));//设置大小 splitPane.setOrientation (JSplitPane.HORIZONTAL_SPLIT); splitPane.setLeftComponent (button);//same as: splitPane.setTopComponent(button); splitPane.setRightComponent (label);//same as: splitPane.setBottomComponent(label); splitPane.setDividerSize (5);//设置分隔条的粗细 splitPane.setDividerLocation(200);//设置分隔条的位置，基于setPreferredSize方法中的值， //此处为200/500，大概在中间靠左
JFrame frame = new ......
JTable(2006-05-21 09:37:00)
摘要：
import java.awt.Dimension;import javax.swing.JFrame;import javax.swing.JScrollPane;import javax.swing.JPanel;import javax.swing.JTable;import java.awt.Color;import java.awt.GridLayout;import javax.swing.table.TableColumn;
public class JTableDemo{ public static void main (String[] args) { /* 构造函数有很多下面先介绍几个: JTable() JTable(int numRows, int numColumns) JTable(Object[][] rowData, Object[] columnNames) */ JTable example1 = new JTable ();//看不到但存在 JTable example2 = new JTable (8, 6); final Object[] columnNames = {"姓名", "性别", "家庭地址",//列名最好用final修饰 "电话号码", "生日", "工作", "收入", "婚姻状况","恋爱状况"}; Object[][] rowData = { {"ddd", "男", "江苏南京", "1378313210", "03/24/1985", "学生", "寄生中", "未婚", "没"}, {"eee", "女", "江苏南京", "13645181705", "xx/xx/1985", "家教", "未知", "未婚", "好象没"......
JTablePanel(2006-05-21 09:30:00)
摘要：import java.awt.FlowLayout;import java.awt.GridLayout;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Dimension;import javax.swing.BoxLayout;import javax.swing.JTabbedPane;import javax.swing.JPanel;import javax.swing.JFrame;import javax.swing.JButton;import javax.swing.ImageIcon;import javax.swing.UIManager;
class TabPane extends JTabbedPane{ JPanel panel1, panel2, panel3, panel4, panel5; public TabPane () { //super (a, b); panel1 = new JPanel (); panel1.add(new JButton()); panel2 = new JPanel (new BorderLayout()); panel3 = new JPanel (true); panel4 = new JPanel (new GridLayout(2,3)); panel5 = new JPanel (new FlowLayout(FlowLayout.LEFT, 1, 0)); //以上是JPanel的四种构造方法 //窗体布局器有四种设置： //new BorderLayout () or new BorderLayout (int hgap, int vgap) //new GridLayout () or new GridLayout (int rows, int cols) new GridLayout (int rows, int ......
JFrame[转载](2006-05-21 09:16:00)
摘要：
import java.awt.*;import javax.swing.*;
public class JFrameDemo extends Frame{ public static void main(String[] args) { JFrameDemo frame = new JFrameDemo ("My Frame"); frame.setSize(200,200); frame.setBackground(Color.red); frame.setLayout(null); frame.setVisible(true); Panel panel = new Panel(); panel.setSize(100, 100); panel.setBackground(Color.yellow); frame.add(panel); //frame.show(); } public JFrameDemo (String str) { super(str); }}
谁都会写但这可以说是最最原始的......GUI的HelloWorld吧!......
JColorChooser[转载](2006-05-21 09:13:00)
摘要：
import java.awt.Dimension;import javax.swing.JColorChooser;import java.awt.Color;import javax.swing.JFrame;import javax.swing.JPanel;import java.awt.event.ActionListener;import java.awt.event.ActionEvent;import javax.swing.JButton;import java.awt.FlowLayout;
public class JColorChooserDemo implements ActionListener{ public static void main(String[] args) { JFrame frame = new JFrame ("JColorChooserDemo"); frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE); MyPanel panel = new MyPanel(); frame.getContentPane ().add (panel); frame.pack(); frame.show(); } public void actionPerformed(ActionEvent e) { }}
class MyPanel extends JPanel implements ActionListener{ private JButton button, rgb, red, green, blue; private Color color = new Color (0, 0, 0); public MyPanel() { button = new JButton ("Get Color"); rgb = new JButton ("RGB: "); &nb......
关于Java中不调用Applet类播放声音的方法(2006-04-16 17:00:00)
摘要：try { // From file AudioInputStream stream = AudioSystem.getAudioInputStream(new File("audiofile")); // From URL stream = AudioSystem.getAudioInputStream(new URL("http://hostname/audiofile")); // At present, ALAW and ULAW encodings must be converted // to PCM_SIGNED before it can be played AudioFormat format = stream.getFormat(); if (format.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) { format = new AudioFormat( AudioFormat.Encoding.PCM_......