Java tutorial
import java.awt.BorderLayout; import javax.swing.JFrame; import javax.swing.JProgressBar; public class Main { public static void main(String args[]) throws Exception { JFrame frame = new JFrame("Indeterminate"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JProgressBar aJProgressBar = new JProgressBar(); aJProgressBar.setIndeterminate(true); frame.add(aJProgressBar, BorderLayout.NORTH); frame.setSize(300, 100); frame.setVisible(true); } }