Updated the thread title.

Hi, for resizing the controls, u should first get the current size of window, whenever the size is changed and then adjust the size of all controls with respect to the current size.
Also plz show the code u attempted, if u want to get help with the code.😀

import javax.swing.*;
import java.awt.*;
import java.sql.*;
import java.awt.event.*;

public class abc extends JFrame implements ActionListener
{

JButton b1;
JLabel l1, l2;
JTextField t1, t2;

public abc()
{
setTitle("WELCOME"); //Title for JFrame
setLayout(null);
//YOU CAN ALSO do
setResizable(false); //i.e Disabling JFrame resizing- Maximize button is DISABLED & also cannot manually resize window using mouse

l1= new JLabel("jLabel1");
t1= new JTextField(25);
l1.setBounds(85,100,100,20); // setting the location of LABEL1
t1.setBounds(150,100,200,20); // setting the location of Field1

l2= new JLabel("jLabel2");
t2= new JTextField(25);
l2.setBounds(85,130,100,20); // setting the location of LABEL2
t2.setBounds(150,130,200,20); // setting the location of Field2

//b1= new JButton("jButton1");
b1.setBounds(165,170,80,20); // setting the location of BUTTON

add(l1);
add(t1);
add(l2);
add(t2);
add(b1);

setSize(500,400); //Set JFrame size
setVisible(true); //Make JFrame visible. So we can see it.
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Set default close operation for JFrame

b1.addActionListener(this);
}
public void actionPerformed(ActionEvent ae)
{
String str = ae.getActionCommand();
// your events .............................mention here
}
public static void main(String args[])
{
new abc();
}
}


In case need any further help, just let me know
}