Languages
Technology
Learning Java Language
The Applete Samples:
import java.applet.Applet;
import java.awt.*;
public class BlinkingTextApplet extends Applet implements Runnable {
private boolean paintThisTime = false;
private Thread flash = null;
public void start() {
flash = new Thread(this);
flash.start();
}
public void stop() {
flash.stop();
}
public void destroy() {
}
public void paint(Graphics g) {
paintThisTime = !paintThisTime;
if(paintThisTime == false) {
return;
}
g.drawString("Oh!!!No!!!IT BLINKS!!!!!",5,25);
}
public void run() {
while (true) {
try {
flash.sleep(650);
} catch(InterruptedException e) {
}
repaint();
}
}
}
This is how you call this program from the *.html file. This program will blink the text when run.
<HTML>
<HEAD>
<TITLE>TEST MY JAVA APPLET</TITLE>
</HEAD>
<BODY>
<APPLET CODE="BlinkingTextApplet.class"WIDTH=250 HEIGHT=100>
</APPLET>
</BODY>
</HTML>The Application Samples:
import java.io.*;
class Console {
static private String GetString(){
try
{
byte bArray[ ] = new byte[128];
System.in.read(bArray);
String s = new String(bArray,0).trim();
return s;
}
catch (IOException ioe)
{
System.out.println(ioe.toString());
ioe.printStackTrace();
return "********";
}
}
static String ReadString() {
String s = GetString();
return s;
}
static String ReadString(String prompt) {
System.out.println(prompt);
return ReadString();
}
static long ReadLong() {
String sl = GetString();
return Long.parseLong(sl);
}
static long ReadLong(String prompt) {
System.out.println(prompt);
return ReadLong();
}
static double ReadDouble() {
String sd = GetString();
return Double.valueOf(sd).doubleValue();
}
static double ReadDouble(String prompt) {
System.out.println(prompt);
return ReadDouble();
}
}
public class ConsoleTest {
public ConsoleTest() {
}
public static void main(String args[]) {
String yesNo = new String("Y");
while (yesNo.equalsIgnoreCase("Y")) {
String s = Console.ReadString("Enter your name: ");
long l = Console.ReadLong("How old are you");
double d = Console.ReadDouble("Balance of your checking account?");
System.out.println(s);
System.out.println(l);
System.out.println(d);
yesNo = Console.ReadString("Do you want to continue (Y/N)?");
do {
}while(true);
}
}
}Jave has brought fundamental change in the Internet technology. However it has not been that much used on the Internet. One thing Java applets are too slow because applets need to be downloaded before it runs on the client side. Once it is there it is normal.
If you know Java and you have become expert in one of its areas of programming you become in one year millionaire in America. It is vey hi-tech programming language. Sun Mirco itself is a very sophisticated digital company in America.
