记事本

来源：互联网发布：sql 取日期部分编辑：程序博客网时间：2024/06/02 20:58

记事本

还没写完，下次再写

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GraphicsEnvironment;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ButtonGroup;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextArea;
import javax.swing.plaf.ComboBoxUI;

import org.omg.CORBA.Environment;

public class JishiText extends JFrame implements ActionListener{
private JComboBox cboxName,cboxSize;
private JTextArea jtArea;
private JCheckBox jCheck1,jCheck2;
private JRadioButton jRadio[];
public JishiText() {
  Dimension dim=getToolkit().getScreenSize();
  setBounds(dim.width/4,dim.height/4 , dim.width*4/7, dim.height/2);
  setDefaultCloseOperation(EXIT_ON_CLOSE);
  //getContentPane().setLayout(new f)

  JMenuBar jbar=new JMenuBar();
  getContentPane().add(jbar,BorderLayout.NORTH);

  GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment();
  String[] ZiName=ge.getAvailableFontFamilyNames();
  cboxName=new JComboBox(ZiName);
  cboxName.addActionListener(this);

  String[] ZiSize={"20","30","40","50"};
  cboxSize=new JComboBox(ZiSize);
  cboxSize.setEditable(true);
  jbar.add(cboxName);
  jbar.add(cboxSize);
  cboxSize.addActionListener(this);

  jtArea=new JTextArea("Welcom 欢迎");
  getContentPane().add(jtArea);

  jCheck1=new JCheckBox("粗体");
  jCheck2=new JCheckBox("斜体");
  jbar.add(jCheck1);
  jbar.add(jCheck2);
  jCheck1.addActionListener(this);
  jCheck2.addActionListener(this);
  //jRadio1=new JRadioButton("红");
  //jRadio2=new JRadioButton("蓝");
  //jRadio3=new JRadioButton("绿");
  String rbColor[]={"红","蓝","绿"};
  ButtonGroup bgroup=new ButtonGroup();
  jRadio=new JRadioButton[rbColor.length];
  for(int i=0;i<rbColor.length;i++){
   jRadio[i]=new JRadioButton(rbColor[i]);
   bgroup.add(jRadio[i]);
   jbar.add(jRadio[i]);
   jRadio[i].addActionListener(this);
  }


  setVisible(true);
}

public static void main(String[] args) {
  new JishiText();
}

boolean isFirst=false;
@Override
public void actionPerformed(ActionEvent e) {
// boolean isFirst=false;

  if(isFirst==true && e.getSource()==cboxSize){
   isFirst=false;
   return;
  }
  if(e.getSource()instanceof JComboBox||e.getSource()instanceof JCheckBox){
   String strSize="";
   try {
    String strFontName=(String) cboxName.getSelectedItem();
    strSize=(String) cboxSize.getSelectedItem();
    int size=Integer.parseInt(strSize);
    if(size<4||size>120){
     throw new NumberFormatException();
    }
    Font font=jtArea.getFont();
    int style =font.getStyle();
    if(e.getSource()==jCheck1){
     style=style ^1;
    }
    if(e.getSource()==jCheck2){
     style=style ^2;
    }
    jtArea.setFont(new Font(strFontName, style, size));

   } catch (NumberFormatException e1) {
    JOptionPane.showMessageDialog(this, "字体格式错误，请从新输入");
    isFirst=true;
   }

  }
  if(e.getSource()instanceof JRadioButton){
   Color c=null;
   if(e.getSource()==jRadio[0]){
    c=new Color(255,0,0);
   }
   if(e.getSource()==jRadio[1]){
    c=new Color(0,0,255);
   }
   if(e.getSource()==jRadio[2]){
    c=new Color(0,255,0);
   }
   jtArea.setForeground(c);
  }
}

}

0 0