class 小李类{
float a, ?=3.14;
void 面积(){
System.out.println(“面积”=+?*a*a);
}
void 周长(){
System.out.println(“周长”=+2*a*?);
}
}
public class WorkB{
public static void main(String args[ ])
小李类 小李 = new小李类();
小李.a=10.0f;
小李.面积();
小李.周长();
}
}
import java.awt.*;
import java.awt.event.*;
class BiDaXiao extends Frame implements ActionListener{
TextField text1,text2,text3;
Button button;
BiDaXiao()
{
setSize(400,300);
setLayout(new FlowLayout());
text1=new TextField(10);
text2=new TextField(10);
text3=new TextField(10);
button=new Button(“比较大小”);
add(text1);
add(text2);
add(text3);
add(button);
button.addActionListener(this);
setVisible(true);
}
public void actionPerformed(ActionEvent e){
if(Float.parseFloat(text1.getText())>Float.parseFloat(text2.getText())) {
text3.setText(text1.getText()+”>”+ text2.getText());
}
else if Float.parseFloat(text1.getText())==Float.parseFloat(text2.getText())){
text3.setText(text1.getText()+”=”+ text2.getText());
}
else
text3.setText(text1.getText()+”b)
{ max=a;
min=b;
}
else
max=b;
min=a;
t3.set Text(String.valueOf(max));
t4.set Text(String.valueOf(min));
}
}
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class Excercise1 extends Applet implements ActionListener{
Text Field t1,t2;
public void init()
{
t1=new Text Field(30);
t2=new Text Field(30);
add(new Label("输入所需比较大小的两数："));
add(t1);
add(new Label("显示较大的数："));
add(t2);
t1.addActionListener(this);
}
public void action performed(Action Event e){
int a,b,t2;
if(a>b)
t2=a;
else
t2=b;
t2.set Text(String.valueOf(t2));
}
}
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