程序加载示例.docx

程序加载示例：学习Java的人一定都用过Eclipse吧，在Eclipse启动的过程中是不是出现了下面的界面对，这就是程序加载。细心的人一定会发现它使用了进度条，并且在界面上它会实时显示当前正在加载的内容。下面我就给大家模拟一下实现这种效果。哈哈，先上效果图。 接着给出代码:import javax.swing.SwingUtilities;import java.awt.BorderLayout;import java.awt.Dimension;import java.awt.Toolkit;import java.lang.reflect.InvocationTargetException;import javax.swing.ImageIcon;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JFrame;import javax.swing.JProgressBar;public class ProgressBarTimer extends JFrame private static final long serialVersionUID = 1L; private static ProgressBarTimer thisClass; private static Thread thread; private JPanel jContentPane = null; private static JProgressBar ProgressBar; private JProgressBar getJProgressBar() if (ProgressBar = null) ProgressBar = new JProgressBar(0, 100); ProgressBar.setStringPainted(true); return ProgressBar; / 继承自Thread的Barthead public static class Barthread extends Thread / 定义jProgressBar JProgressBar jProgressBar; public Barthread(JProgressBar progressBar) / TODO 自动生成构造函数存根 jProgressBar = progressBar; public void run() /设置进度条的minimun和maximun int minimun = jProgressBar.getMinimum(); int maximun = jProgressBar.getMaximum(); / 进度条运行方法 Runnable runner = new Runnable() public void run() / 设置进度条的参数 int value = jProgressBar.getValue(); jProgressBar.setValue(value + 1); / 设置窗体在进度条完成率为50%的时候实例化SQLNew类. / 设置窗体在进度条完成率为100%的时候运行Opening方法 if (jProgressBar.getPercentComplete() = 1.0) Opening(); / Opening方法的实例 private void Opening() / 实例化ProgressBarTimer2窗体 ProgressBarTimer progressBarTimer = new ProgressBarTimer(); progressBarTimer.setVisible(true); progressBarTimer.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); /将第一个窗体（ProgressBarTimer）的可见性设置为false thisClass.setVisible(false); thisClass.dispose(); jProgressBar.setVisible(false); ; /线程的运行,休眠,中断 for (int i = minimun; i screenSize.height) frameSize.height = screenSize.height; if (frameSize.width screenSize.width) frameSize.width = screenSize.width; this.setLocation(screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2); private JPanel getJContentPane() if (jContentPane = null) jContentPane = new JPanel(); jContentP