JLabel

package com.company;

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

public class Main extends JFrame {
    public Main(){
        setBounds(100,100,200,100);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        Container c=getContentPane();
        setVisible(true);

        JLabel l=new JLabel("这是一个标签");
//        l.setText("更改标签内容");
//        System.out.println(l.getText());
        l.setFont(new Font("微软雅黑",Font.BOLD,15));//更改字体和大小
        l.setForeground(Color.red);//更改前景色，跟改字体颜色

        c.add(l);
    }

    public static void main(String[] args) {
    // write your code here
        new Main();
    }
}