标签:JAVA text actionListen add 字体 Swing new Font panel
运行效果
代码
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class demo extends JFrame {
JTextArea text;
JComboBox fonts,sizes,colors;
JButton ensure,cancel;
String[] font ={"宋体","黑体","楷体","仿宋"};
String[] size ={"10号","12号","14号","16号"};
String[] color = {"黑色","红色","绿色","蓝色"};
int[] sizeen={10,12,14,16};
Color[] coloren = {Color.BLACK,Color.RED,Color.GREEN,Color.BLUE};
public demo(){
this.setLayout(new GridLayout(1,2));
text = new JTextArea("这是一个多行文本框,你可以使用右边的选项来设置字体",3,15);
text.setLineWrap(true);
text.setFont(new Font("宋体",Font.PLAIN,10));
this.add(text);
JPanel panel = new JPanel(new GridLayout(5,2));
panel.add(new JLabel("字体设置"));
panel.add(new JLabel());
panel.add(new JLabel("字体:"));
panel.add(fonts=new JComboBox(font));
panel.add(new JLabel("字号:"));
panel.add(sizes=new JComboBox(size));
panel.add(new JLabel("颜色:"));
panel.add(colors=new JComboBox(color));
panel.add(ensure=new JButton("确定"));
panel.add(cancel=new JButton("取消"));
this.add(panel);
ActionListen actionListen = new ActionListen();
fonts.addActionListener(actionListen);
sizes.addActionListener(actionListen);
colors.addActionListener(actionListen);
ensure.addActionListener(actionListen);
cancel.addActionListener(actionListen);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setVisible(true);
this.setSize(350,150);
}
class ActionListen implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
int f = fonts.getSelectedIndex();
int s = sizes.getSelectedIndex();
int c = colors.getSelectedIndex();
Object source = e.getSource();
if (source.equals(ensure)){
text.setFont(new Font(font[f],Font.PLAIN,sizeen[s]));
text.setForeground(coloren[c]);
}
else if (source.equals(cancel)){
text.setFont(new Font(font[0],Font.PLAIN,sizeen[0]));
text.setForeground(coloren[0]);
fonts.setSelectedIndex(0);
sizes.setSelectedIndex(0);
colors.setSelectedIndex(0);
}
}
}
public static void main(String[] args) {
new demo();
}
}
标签:JAVA,text,actionListen,add,字体,Swing,new,Font,panel 来源: https://www.cnblogs.com/handsomeplus/p/14791174.html
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