deprecated API

[Akshay Reddy]

heyy i am unable to understand this,

 public class LiftSim
{
	public static void main(String args[])
	{
		// defualt to 5 elevators
		int num = 5;
		if(args.length > 0) {
			Integer num_elevators = new Integer(args[0]);
			num = num_elevators.intValue();
		}

		Toolkit kit = Toolkit.getDefaultToolkit();
		Dimension screenSize = kit.getScreenSize();
		int screenWidth = screenSize.width;
		int screenHeight = screenSize.height;

		JFrame.setDefaultLookAndFeelDecorated(true);
		LiftSimFrame frame = new LiftSimFrame(num);
		frame.setLocation(screenWidth/3, screenHeight/4);
		frame.setDefaultLookAndFeelDecorated(true);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.show();
	}
}   

for this code the error message is

a deprecated API in line 32 --- that is the frame.show() is long back Deprecated it seems

my laptop has jdk1.6 and it show the deprecated warning in my laptop

while my friend has jdk 1.4 and it is fine there.....what is the alternative to remove this warning message in Jdk 1.6

[Paul Sturrock]

Assuming LiftSimFrame extends java.awt.Window you need to use the setVisible(boolean) mehod. When you get a deprecation warning you need to check the JavaDocs, they wioll tell you the method that is replacing the deprecated one.

[Akshay Reddy]

So , do you want me to do this....as you can see,
I have imported the java.awt.window package and i have changed frame.show() to frame.setvisible(true)

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.Toolkit;
import java.awt.window;


public class LiftSim
{
	public static void main(String args[])
	{
		// defualt to 5 elevators
		int num = 2;
		if(args.length > 0) {
			Integer num_elevators = new Integer(args[0]);
			num = num_elevators.intValue();
		}

		Toolkit kit = Toolkit.getDefaultToolkit();
		Dimension screenSize = kit.getScreenSize();
		int screenWidth = screenSize.width;
		int screenHeight = screenSize.height;

		JFrame.setDefaultLookAndFeelDecorated(true);
		LiftSimFrame frame = new LiftSimFrame(num);
		frame.setLocation(screenWidth/3, screenHeight/4);
		frame.setDefaultLookAndFeelDecorated(true);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setvisible(true);
	}
}

[Campbell Ritchie]

Abhinav Atla wrote:So , do you want me to do this

What we really want you to do is to look at the show() method documentation and see what it recommends there.

[chandrakant karale]

If you want to get rid of that warning only without bothering about the deprecation, just use supress warning annotation.

[Rob Spoor]

Which is a bad idea for deprecated code. It's deprecated for a reason, and should not be used at all unless you really, really have to. And you don't have to unless you are implementing an interface with deprecated methods (like java.sql.ResultSet).

[Campbell Ritchie]

To add to what Rob says, there are some deprecated methods which are positively harmful, so you need to know they are deprecated and not use them.