windows计算器简单UI设计(java)_windows 用java开发ui

先看一下windows的计算器UI：

我的UI：

package First;
 
import java.awt.BorderLayout;
import java.awt.GridLayout;
 
import javax.swing.*;
 
 
public class Calculator extends JFrame  {
	
	JTextField aTextField = new JTextField(30);
	JButton buttonBackspace = new JButton("Backspace");
	JButton buttonCE = new JButton(" CE ");
	JButton buttonClear = new JButton("Clear");
	JButton buttonONE[]= {new JButton("MC"),new JButton("7"),new JButton("8"),
			              new JButton("9"),new JButton("/"),new JButton("sqrt")};
	JButton buttonTWO[]= {new JButton("MR"),new JButton("4"),new JButton("5"),
                          new JButton("6"),new JButton("*"),new JButton("%")};
	JButton buttonTHREE[]= {new JButton("MS"),new JButton("1"),new JButton("2"),
                          new JButton("3"),new JButton("-"),new JButton("1/x")};
	JButton buttonFOUR[]= {new JButton("M+"),new JButton("0"),new JButton("+/-"),
                          new JButton("."),new JButton("+"),new JButton("=")};
	public Calculator() {
		// JFrame fr = new JFrame();
		setLayout(new BorderLayout());
 
		JPanel panel1 &