Java installation Configuration
Download and install
Www.sun.com
Environment Variable
Java_home is the JDK path, for example, java_home = D:/Java/jdk1.5.0
Add "; % java_home %/bin" to the path ".
Java applications
The welcome. Java file is as follows:
Public class welcome ...{
Public static void main (string ARGs [])
...{
System. Out. println ("Welcome to Java programming! ");
}
}
Compile:
Javac welcome. Java
Run:
Java welcome
Java Applet
Welcomeapplet. Java:
Import javax. Swing. japplet; // import class japplet
Import java. AWT. graphics; // import class graphics
Public class welcomeapplet extends japplet ...{
Public void paint (Graphics g)
...{
G. drawstring ("Welcome to Java programming! ", 25, 25 );
}
}
Welcomeapplet.html:
<HTML>
<APPLET code = "welcomeapplet. Class" width = 300 Height = 30>
</APPLET>
</Html>
Compile:
Javac welcomeapplet. Java
Run:
Appletviewer welcomeapplet.html
It can also be opened in a browser.