component.java

贪食蛇的实现源码

package awt;
import java.awt.*;

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class Component extends Frame {
  private Frame f=new Frame("component"); 
  private Button but=new Button("button");
  private Label lab=new Label("label");
  private Checkbox cb[]=new Checkbox[7];
  private Canvas can=new Canvas();
  private Choice ch=new Choice();
  private TextArea ta=new TextArea("textareafssgfsfwfsfskhlhklyh",3,5);//滚动条数为2？？
  private TextField tf=new TextField("textfield 123456",6);//只显示一行无滚动条
  private List li=new List(3,false);//一个list页面可显示的行数为3，false为不可多选，多选一
 // private Dialog di=new Dialog(f);
  public void test(){
	  f.setLayout(new FlowLayout(FlowLayout.CENTER));
	 // f.setLayout(new BorderLayout(BorderLayout.CENTER));
	  f.setSize(300,300);
	  ch.add("123456");
	  ch.add("123456455");
	  ch.add("123456788");
	  cb[0]=new Checkbox();
	  cb[1]=new Checkbox();
	  cb[0].setLabel("shi jia zhuang");
	  cb[1].setLabel("bei jing");
	  cb[0].setBackground(Color.CYAN);
	  f.add(cb[0]);
	  f.add(cb[1]);
	  f.add(cb[2]=new Checkbox("bao ding",true));
	  f.add(cb[3]=new Checkbox("tian jing"));
	  CheckboxGroup group=new CheckboxGroup() ;
	  this.add(cb[4]=new Checkbox("shang hai",group,false));
	  f.add(cb[5]=new Checkbox("xing tai",group,false));
	  f.add(cb[6]=new Checkbox("tai yuan",group,true));
	  
	  f.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent evt){
				f.setVisible(false);
				f.dispose();
				System.exit(0);
			}
		});
	  
	  li.add("apple");
	  li.add("orange");
	  li.add("peach");
	  li.add("banana");
	  li.add("pear");
	  f.add(can);
	 // Graphics g=new Graphics(Circle);
	  can.repaint();
	  f.add(ch);
	  f.add(ta);
	  f.add(tf);
	  f.add(li);
	//  f.add(di);
	  f.add(but);
	  f.add(lab);
	  f.setBackground(Color.cyan);
	//ta.setBackground(Color.BLUE);
	  f.setVisible(true);
	   
  }
  
  
	
	public static void main(String[] args) {
		Component  com=new Component ();
		com.test();


	}

}