proble with adding jscrollpane to jframe

[pravin rasal]

proble with adding jscrollpane to jframe

package other;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Container;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.ScrollPane;
import java.awt.Stroke;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Line2D;
import javax.swing.*;
import javax.swing.plaf.ComboBoxUI;

public class Test extends JPanel implements ActionListener 
{

	JButton button;
	JLabel label;
	JTextField textField;
	JScrollPane pane;
	JPanel panel;
	JFrame frame;
	Container c;
	static int val;
	static int incValue=1;
	int xa,ya,xb,yb,x1,y1;
	int xc,yc,xd,yd;
	int lsb=0,msb=7;
	int maxValue=20*incValue;
	char val1='A',val2='B';
	Thread runner=null;
	JComboBox cmb; 
	
	public Test() 
	{
		setLayout(null);
		setBackground(Color.LIGHT_GRAY);
		textField=new JTextField();
		label=new JLabel("Enter Clock value: ");
		button=new JButton("Ok");
		cmb=new JComboBox();
		cmb.addItem("1");
		cmb.addItem("2");
		cmb.addItem("3");
		
		System.out.println("in const");
		label.setBounds(280,550,120,20);
		textField.setBounds(410,550,50,25);
		button.setBounds(480,550,70,25);
		cmb.setBounds(410,580,70,25);
		this.setBounds(0,0,900,700);
		add(button);
		add(textField);
		add(label);
		add(cmb);

		button.addActionListener(this);
		cmb.addActionListener(this);

	}

	

	public void paintComponent(Graphics g) 
	{
		super.paintComponent(g);
		
		xa=100;ya=120;
		xb=xa+maxValue/2;yb=ya;
		xc=xb;yc=yb+maxValue/2;
		xd=xa+maxValue;yd=yc;
		
		maxValue=20*incValue;
		
		System.out.println("maxvalu with incValu>>"+maxValue);
		Font f=new Font("serif", Font.BOLD,20);
		
		g.setColor(Color.black);
		g.drawLine(100,100,100,530);  			// Draw Y axis.
		//g.drawLine(100,500,,500);  			//Draw X axis.
		g.drawString("CLK",xa-40 ,ya);
		g.drawString("DATA", xa-40, 300);
		g.drawString("["+msb+":"+lsb+"]", xa-40, 312);

		System.out.println("incvlaue :"+incValue);
		g.setFont(f);
		g.setColor(Color.red);
		g.drawString("Timing Analysis", 500,30);


		Graphics2D g2d = (Graphics2D)g;
		Stroke stroke=new BasicStroke(1f, BasicStroke.CAP_ROUND,BasicStroke.JOIN_BEVEL,1f, new float[] {2f}, 0f);
		Stroke drawingStroke = new BasicStroke(2);

		for(int i=1;i<=val;i++)
		{

			g2d.setColor(Color.black);
			g2d.setStroke(stroke);
			Line2D line = new Line2D.Double(xb,yb,xb,500);
			g2d.draw (line);
			Line2D line2 = new Line2D.Double(xd,yd-50,xd,500);
			g2d.draw (line2); 
			g2d.setStroke(drawingStroke);

			if(x1<xd)
			{
				x1=xd;
				g.setColor(Color.black);
				g.drawLine(50,500,x1,500);  //Draw X axis.
			}
			g.drawString("t"+i,xa+20,ya-5);

			g.setColor(Color.blue);
			g.drawLine(xa,ya,xb,yb);		//h1
			g.setColor(Color.blue);         
			g.drawLine(xb,yb,xc,yc);  		//v1
			g.setColor(Color.blue);  
			g.drawLine(xc,yc,xd,yd);     	//h2

			if(i%2==0)
				g.drawString(""+val1,(xa+xd)/2, 300);
			else
				g.drawString(""+val2,(xa+xd)/2 , 300);

			g.drawLine(xa, 300, (xa+xb)/2, 275);
			g.drawLine((xa+xb)/2, 275, (xc+xd)/2, 275);
			g.drawLine((xc+xd)/2, 275, xd, 300);
			g.drawLine((xa+xb)/2, 325, (xc+xd)/2, 325);
			g.drawLine(xa, 300, (xa+xb)/2, 325);
			g.drawLine((xc+xd)/2, 325, xd, 300);

			xa=xa+maxValue;
			xb=xa+maxValue/2;
			yb=ya;
			xc=xb;

			yc=yb+maxValue/2;
			xd=xa+maxValue;
			yd=yc;


		}
	}

	public static void main(String[] args) 
	{
		JFrame frame = new JFrame();
		JScrollPane pane=new JScrollPane(new Test(),JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
		frame.add(pane);
		
//		Drawjp = new DrawingPanel(); // DrawingPanel is a subclass of JPanel which implements paint();
//		JScrollPane scroller = new JScrollPane(jp);
//		scroller.setVerticalScrollBarPolicy(ScrollPaneCons tants.VERTICAL_SCROLLBAR_ALWAYS);
//		add(scroller);
//		add(jp);
//		
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		//frame.setSize(900,700);
		frame.setExtendedState(frame.MAXIMIZED_BOTH);
		frame.setVisible(true);


	}

	@Override
	public void actionPerformed(ActionEvent e) 
	{

		if(e.getSource()==button)
		{
			val=Integer.parseInt(textField.getText());
			repaint();

		}
		if(e.getSource()==cmb)
		{
			if(cmb.getSelectedItem().toString()=="1")
			{
				
				incValue=1;
			
			}
			if(cmb.getSelectedItem().toString()=="2")
			{
				incValue=2;
			
			}
			if(cmb.getSelectedItem().toString()=="3")
			{
				incValue=3;
			
			}
		
		}

	}

//	@Override
//	public void run() {
//
//
//		// lower ThreadPriority
//		Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
//
//		// run a long while (true) this means in our case "always"
//		while (true)
//		{
//
//			// repaint the applet
//			repaint();
//
//			try
//			{
//				// Stop thread for 20 milliseconds
//				Thread.sleep (100);
//			}
//			catch (InterruptedException ex)
//			{
//				// do nothing
//			}
//
//			// set ThreadPriority to maximum value
//			Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
//
//		} 
//
//
//		// TODO Auto-generated method stub
//		//		while(runner!=null)
//		//			repaint();
//		//		try
//		//		{
//		//			Thread.sleep(100);
//		//		}catch(InterruptedException i)
//		//		{
//		//			System.out.println(i.getMessage());
//		//		}
//
//	}
//	public void start()
//	{
//		if(runner==null)
//		{
//			runner=new Thread(this);
//			runner.start();
//		}
//	}	

}

[Hebert Coelho]

What is your problem?

[Michael Dunn]

currently on this forum's 1st page is a similar/same problem post.

the answers in that post should solve your problem