importjava.awt.*;importjava.awt.event.*;publicclassGraphicsDDAextendsFrameimplementsItemListener,ActionListener{privateintX;privateintY;privateLabellabel1;privateTextFiel...
import java.awt.*;
import java.awt.event.*;
public class GraphicsDDA extends Frame implements ItemListener ,ActionListener{
private int X;
private int Y;
private Label label1;
private TextField startX;
private Label label2;
private TextField startY;
private Label label3;
private TextField endX;
private Label label4;
private TextField endY;
private Choice colorChoice;
private Button start;
private Panel panel;
public GraphicsDDA()
{
super("DDA");
label1=new Label("起点X");
startX=new TextField(5);
label2=new Label("起点Y");
startY=new TextField(5);
label3=new Label("终点X");
endX=new TextField(5);
label4=new Label("终点Y");
endY=new TextField(5);
colorChoice=new Choice();
colorChoice.add("BLACK");
colorChoice.add("BLUE");
colorChoice.add("GREEN");
colorChoice.add("CYAN");
colorChoice.add("RED");
colorChoice.add("MAGENTA");
colorChoice.add("LIGHTGRAY");
colorChoice.add("DARKGRAY");
start=new Button("开始");
panel=new Panel();
this.add(label1);
this.add(startX);
this.add(label2);
this.add(startY);
this.add(label3);
this.add(endX);
this.add(label4);
this.add(endY);
this.add(colorChoice);
this.add(start);
this.add("Center",panel);
panel.setSize(100,100);
panel.setLocation(100,100);
panel.setBackground(Color.white);
// this.setLayout(new BorderLayout());
this.setSize(800,600);
this.setBackground(Color.lightGray);
this.setVisible(true);
this.addWindowListener( new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
}
);
}
public void itemStateChanged(ItemEvent e)
{
}
public void actionPerformed(ActionEvent e)
{
}
public static void main(String [] args)
{
GraphicsDDA myDDA=new GraphicsDDA();
}
}
panel 与 其他控件的 叠放次序老 是弄不好，不是太大就是太小
高郁闷了
展开