?? randomweb.java
字號:
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class RandomWeb extends JApplet implements ActionListener {
WebButton[] choices = new WebButton[10];
public void init() {
FlowLayout flo = new FlowLayout();
getContentPane().setLayout(flo);
for (int i = 0; i < 10; i++) {
StringBuffer randomDomain = new StringBuffer();
for (int j = 0; j < 3; j++) {
// Create a random number from 0 to 25
double tempValue = Math.random() * 26 - 1;
int randomNumber = (int) Math.floor( tempValue ) + 1;
int firstLetter = (int)'a';
char letter = (char) (firstLetter + randomNumber);
randomDomain.append(letter);
}
String address = new String("http://www." + randomDomain.toString() +
".com/");
choices[i] = new WebButton("WWW." + randomDomain.toString().toUpperCase() +
".COM", address);
choices[i].addActionListener(this);
getContentPane().add(choices[i]);
}
}
public void actionPerformed(ActionEvent evt) {
WebButton clicked = (WebButton)evt.getSource();
try {
URL load = new URL(clicked.address);
getAppletContext().showDocument(load);
} catch (MalformedURLException e) {
showStatus("Bad URL:" + clicked.address);
}
}
}
class WebButton extends JButton {
String address;
WebButton(String iLabel, String iAddress) {
super(iLabel);
address = iAddress;
}
}
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