神马品牌网清华培训感悟:JAVA编程
来源：百度文库 编辑：神马品牌网 时间：2024/04/29 02:12:10
我会在线等的。谢谢大家
import java.applet.*;
import java.awt.*;
public class MyApplet extends Applet
{
TextField x2 = new TextField(10);
TextField x1 = new TextField(10);
Label b1 = new Label(" ");
Label b2 = new Label(" ");
int a = 4;
double b = 0.5;
double z1;
double z2;
double z3;
double z4;
public void init()
{
TextField x1 = new TextField(10);
TextField x2 = new TextField(10);
Label b1 = new Label(" ",Label.CENTER);
Label b2 = new Label(" ");
z1 = a*b;
z2 = a/b;
z3 = a+b;
z4 = a-b;
add(b1);
add(b2);
add(x1);
add(x2);
x1.setText("" + z1);
x2.setText("" + z2);
b1.setText("" + z3);
b2.setText("" + z4);
}
public void paint(Graphics g)
{
g.drawString("" ,50,60);
}
}
我对上面的程序进行下修改，虽然他那是正确的，便是他对标检和文本筐定义重复了。
import java.applet.*;
import java.awt.*;
public class MyApplet extends Applet
{
TextField x2 = new TextField(10);
TextField x1 = new TextField(10);
Label b1 = new Label(" ");
Label b2 = new Label(" ");
int a = 4;
double b = 0.5;
double z1;
double z2;
double z3;
double z4;
public void init()
{
z1 = a*b;
z2 = a/b;
z3 = a+b;
z4 = a-b;
add(b1);
add(b2);
add(x1);
add(x2);
x1.setText("" + z1);
x2.setText("" + z2);
b1.setText("" + z3);
b2.setText("" + z4);
}
public void paint(Graphics g)
{
g.drawString("" ,50,60);
}
}