Java swing application not repainting

[Braden Steffaniak]

I have a java application that should be repainting all the time, however, only repaints once.

heres the method that runs continuously through a infinite loop:

public void render()
{
	renderUser();
	//renderCollectableBlocks();
	
	fps.setText("Fps: " + Main.fps + "   " + (Main.user.getX() - Main.terrainContainer.get(0).getX()) + ", " + Main.user.getY());
	
	System.out.println("asdf");
	repaint();
}

And heres the paintComponent method:

public void paintComponent(Graphics g)
{
	super.paintComponent(g);
	Graphics2D g2D = (Graphics2D) g;
	
	Main.terrainContainer.get(0).terrain.paint(g2D);
	fps.paint(g2D);
	//Main.user.getUser().paintIcon(this, g2D, Main.user.getX(), Main.user.getY());
	Main.userLabel.paint(g2D);
	Main.selected.paint(g2D);
	blockTable.paint(g2D);
	respawn.paint(g2D);
	
	System.out.println("testing");
}

It only prints "testing" once... then never again. On the other hand, it prints "asdf" continuously. What am I doing wrong?

[Rob Camick]

We can't tell what you are doing wrong based on a few lines of code because we don't know the context of how/when the code is executed.

Maybe your loop is running on the Event Dispatch Thread and you are preventing the frame from repainting itself since the repaint will only be done when the loop is finished executing.

Use a Swing Timer to schedule animation/repainting.

Post your SSCCE that demonstrates the problem.