一個矩形組件

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Method	Describle
JProgrssBar()	不帶進度字符，最小值0最大值100的水平進度條
JProgressBar(int orient)	VERTICAL/HORIZONTAL
JProgressBar(int in,int max)	指定最大最小的水平進度條
JProgressBar(int orient,int min, int max)	指定方向，最大最小

example

package?Eleven;import?javax.swing.JFrame;import?javax.swing.JProgressBar;import?javax.swing.WindowConstants;import?javax.swing.WindowConstants;import?javax.swing.JProgressBar;import?java.awt.BorderLayout;import?javax.swing.JLabel;public?class?Progress?extends?JFrame?{private?static?JProgressBar?progressBar;public?Progress(){setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);progressBar?=?new?JProgressBar();//void?javax.swing.JProgressBar.setStringPainted(boolean?b)//true:顯示進度%xprogressBar.setStringPainted(true);
//void?java.awt.Container.add(Component?comp,?Object?constraints)getContentPane().add(progressBar,BorderLayout.CENTER);setBounds(100,100,300,78);final?JLabel?label?=?new?JLabel();getContentPane().add(label,BorderLayout.NORTH);label.setText("loading...");setVisible(true);}public?static?void?main(String[]?args){new?Progress();
//void?javax.swing.JProgressBar.setIndeterminate(boolean?newValue)progressBar.setIndeterminate(true);for(int?i?=?0;i?<=?100;i++){try{Thread.sleep(100);}catch(InterruptedException?e){e.printStackTrace();}//void?javax.swing.JProgressBar.setValue(int?n)progressBar.setValue(i);}progressBar.setIndeterminate(true);//進度條滿顯示滿格progressBar.setString("Done");}
}