Example sharing of java button control array implementation calculator interface

The idea is as follows:

Create a class and use extends to inherit the form class JFrame;

Create a JFrame object and use the setVisible() method of the JFrame class to set the form to be visible;

In the constructor, use the super() method to inherit the constructor of the parent class;

Use the setTitle() method to set the title of the form;

Use the setBounds() method to set the display position and size of the form;

Use the setDefaultCloseOperation() method to set the action of the form close button to exit;

Create a grid layout manager object using GridLayout;

Use the setHgap() method of the GridLayout class to set the horizontal spacing of the components;

Use the setVgap() method of the GridLayout class to set the vertical spacing of the component;

Create JPanel container object;

Setting the container through the setLayout() method of the JPanel class uses the grid layout manager;

Create a string-type two-dimensional array and initialize its value to the value displayed on the corresponding button on the calculator;

Create a JButton-type two-dimensional array and allocate the space corresponding to the previous string-type two-dimensional array;

Iterate through the string-type two-dimensional array, assign it to the corresponding buttons in the JButton-type two-dimensional array to each element, and add events to each button so that the corresponding value is displayed in the text input box when the button is clicked. , and finally use the add() method of the JPanel class to add the button to the panel.

The code copy is as follows:

import java.awt.BorderLayout;

import java.awt.Dimension;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.SwingConstants;

import javax.swing.UIManager;

public class ButtonArrayExample extends JFrame { // Inherit the form class JFrame

/**

*

*/

private static final long serialVersionUID = 6626440733001287873L;

private JTextField textField;

public static void main(String args[]) {

try {

UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");

} catch (Throwable e) {

e.printStackTrace();

}

ButtonArrayExample frame = new ButtonArrayExample();

frame.setVisible(true); // Set the form to be visible, default to invisible

}

public ButtonArrayExample() {

super(); // Inherit the constructor of the parent class

BorderLayout borderLayout = (BorderLayout) getContentPane().getLayout();

borderLayout.setHgap(20);

borderLayout.setVgap(10);

setTitle("Button Array Implementation Calculator Interface"); // Set the title of the form

setBounds(100, 100, 290, 282); // Set the display position and size of the form

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Set the form close button to exit

textField = new JTextField();

textField.setHorizontalAlignment(SwingConstants.TRAILING);

textField.setPreferredSize(new Dimension(12, 50));

getContentPane().add(textField, BorderLayout.NORTH);

textField.setColumns(10);

final GridLayout gridLayout = new GridLayout(4, 0); // Create a grid layout manager object

gridLayout.setHgap(5); // Set the horizontal spacing of components

gridLayout.setVgap(5); // Set the vertical spacing of components

JPanel panel = new JPanel(); // Get container object

panel.setLayout(gridLayout); // Set the container to use grid layout manager

getContentPane().add(panel, BorderLayout.CENTER);

String[][] names = { { "1", "2", "3", "+" }, { "4", "5", "6", "-" }, { "7", " 8", "9", "×" }, { ".", "0", "=", "÷" } };

JButton[][] buttons = new JButton[4][4];

for (int row = 0; row < names.length; row++) {

for (int col = 0; col < names.length; col++) {

buttons[row][col] = new JButton(names[row][col]); // Create button object

buttons[row][col].addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

JButton button = (JButton) e.getSource();

String text = textField.getText();

textField.setText(text + button.getText());

}

});

panel.add(buttons[row][col]); // Add button to the panel

}

}

}

}