Many developers want their own Layout Manager with user-defined so JAVA has provided a separate method for the every container of JFrame Component and that method is setBounds(). This method helps the developers to position the container as per their need .

About SetBounds() method:

This method consists four parameter

  Syntax:
     xxx.setBounds(int x_axis, int y_axis, int width, int height);

We can arrange the containers with the help of this method easily.

A example of this method is shown below:

import java.awt.BorderLayout;
import java.awt.Toolkit;
import java.awt.Dimension;

public class LoginPanel {

	public LoginPanel() {

	}

	public static void main (String[] args) {
		JFrame frame = new JFrame();

		frame.setLayout(null);

		//For Positioning the Containers

		//Labeling
		JLabel label = new JLabel("WELCOME TO"+
		"LOGIN PANEL", JLabel.CENTER);
		JLabel user = new JLabel("UserName:\t");
		JLabel pass = new JLabel("Password:\t");

		//Some features of SETBOUNDS() Methods
		//setBounds(x-axis, y-axis, width, height);
		label.setBounds(150,10,220,20);
		user.setBounds(150,50,100,50);
		pass.setBounds(150,90,100,50);

		//TextField
		JTextField userField = new JTextField();
		JPasswordField passField = new JPasswordField();

		//Some of the features of SETBOUNDS() Methods
		//setBounds(x-axis, y-axis, width, height);
		userField.setBounds(250,65,80,20);
		passField.setBounds(250,105,80,20);

		//Button
		JButton but1 = new JButton("Submit");

		//setBounds(x-axis, y-axis, width, height);
		but1.setBounds(200,150,100,20);

		//adding containers to JFRAME
		frame.getContentPane().add(label);
		frame.getContentPane().add(user);
		frame.getContentPane().add(userField);
		frame.getContentPane().add(pass);
		frame.getContentPane().add(passField);
		frame.getContentPane().add(but1);

		//features of JFrame
		//Although these can be defined
		//before the containers.
		//We defined at last
		frame.setVisible(true);
		frame.setSize(500,300);

	}

}

And the output must be like this:

Login Panel Output

Login Panel Output