Java 82. Tùy chỉnh font chữ và kích cỡ chữ của các thành phần giao diện

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Video giải thích chi tiết

https://docs.oracle.com/javase/7/docs/api/java/awt/Font.html

 Code chi tiết 

package model;

public class LastButtonModel {
	private int value;

	public LastButtonModel() {
		this.value = 1;
	}

	/**
	 * @return the value
	 */
	public int getValue() {
		return value;
	}

	/**
	 * @param value the value to set
	 */
	public void setValue(int value) {
		this.value = value;
	}
	
	public void setValue_1() {
		this.setValue(1);
	}
	
	public void setValue_2() {
		this.setValue(2);
	}
	
	public void setValue_3() {
		this.setValue(3);
	}
	
	public void setValue_4() {
		this.setValue(4);
	}
}

     

package view;

import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.GridLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

import controller.LastButtonListener;
import model.LastButtonModel;

public class LastButtonView extends JFrame{
	private LastButtonModel lastButtonModel;
	private JLabel jLabel;
	public LastButtonView() {
		this.lastButtonModel = new LastButtonModel();
		
		this.init();
	}
	private void init() {
		this.setTitle("Last Button");
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setSize(300,300);
		
		JPanel jpanel_Center = new JPanel();
		jpanel_Center.setLayout(new GridLayout(2,2));
		
		// Tao listener
		LastButtonListener lastButtonListener = new LastButtonListener(this);
		
		// Tao font chu
		Font font = new Font("Arial", Font.BOLD, 40);
		
		JButton jButton_1 = new JButton("1");
		// Gan font chu
		jButton_1.setFont(font);
		jButton_1.addActionListener(lastButtonListener);
		JButton jButton_2 = new JButton("2");
		jButton_2.setFont(font);
		jButton_2.addActionListener(lastButtonListener);
		JButton jButton_3 = new JButton("3");
		jButton_3.setFont(font);
		jButton_3.addActionListener(lastButtonListener);
		JButton jButton_4 = new JButton("4");
		jButton_4.setFont(font);
		jButton_4.addActionListener(lastButtonListener);
		
		jpanel_Center.add(jButton_1);
		jpanel_Center.add(jButton_2);
		jpanel_Center.add(jButton_3);
		jpanel_Center.add(jButton_4);
		
		JPanel jpanel_Footer = new JPanel();
		jLabel = new JLabel("------");
		jLabel.setFont(font);
		jpanel_Footer.add(jLabel);
		
		this.setLayout(new BorderLayout());
		
		this.add(jpanel_Center, BorderLayout.CENTER);
		this.add(jpanel_Footer, BorderLayout.SOUTH);
		this.setVisible(true);
	}
	
	public void changeTo_1() {
		this.lastButtonModel.setValue_1();
		jLabel.setText("Last button: "+this.lastButtonModel.getValue());
	}
	public void changeTo_2() {
		this.lastButtonModel.setValue_2();
		jLabel.setText("Last button: "+this.lastButtonModel.getValue());
	}
	public void changeTo_3() {
		this.lastButtonModel.setValue_3();
		jLabel.setText("Last button: "+this.lastButtonModel.getValue());
	}
	public void changeTo_4() {
		this.lastButtonModel.setValue_4();
		jLabel.setText("Last button: "+this.lastButtonModel.getValue());
	}
}

     

package controller;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import view.LastButtonView;

public class LastButtonListener implements ActionListener{
	private LastButtonView lastButtonView;
	
	public LastButtonListener(LastButtonView lastButtonView) {
		this.lastButtonView = lastButtonView;
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		String nguonSuKien = e.getActionCommand();
		if (nguonSuKien.equals("1")) {
			this.lastButtonView.changeTo_1();
		}else if (nguonSuKien.equals("2")) {
			this.lastButtonView.changeTo_2();
		}else if (nguonSuKien.equals("3")) {
			this.lastButtonView.changeTo_3();
		}else if (nguonSuKien.equals("4")) {
			this.lastButtonView.changeTo_4();
		}
	}
}

     

package test;

import view.LastButtonView;

public class Test {
	public static void main(String[] args) {
		new LastButtonView();
	}
}