how to compile a java program ?

Answer 1

for suppose if u installed java software in any drive then note down the path where it is Installed .....!
eg: defaultly it will installed in c:\
then it's path to compile the java program is
c:\jdk1.4.0\bin\javac
then set the path to compile the program
from run logon to command prompt

c:\>set path=c:\jdk1.4.0\bin (then press enter)
c:\>set classpath=.;%classpath%;(press enter)
then compile ur program as
c:\javac (press enter)
c:\java
////gives output//////

Answer 2

Example 1
Type the following program and save it in a file with the name "First.java"

/*
This is my first java program
*/

// This is the class definition, First is the name of the class

class First{

// this program will begin with a call to main() defined as follows

public static void main(String args[]){
System.out.println("My first java program");
}
}
Compile the First program as follows
c:\jdk\application>javac First.java
I am assuming that First.java is in a directory called application
and application is in the jdk directory.
The java compiler creates a file called First.class in the directory
application (check that it is there !). This class contains
the program but in bytecode form ready to run. Run the program as follows
c:\jdk\application>java First
The output of this program is
My first java program
NOTE
1-java is case sensitive, first is different from First.
2-By convention the name of the file should match the name of the
class.

Answer 3

If you compile from the command line you first need to set your PATH environment variable to the location of your java compiler.

Then the code is

javac "Your Java File Name Here"

Answer 4

Thogh compiling java program can be done by command line, I recommend you using an IDE, this will make your work easier.
Their are very good free IDE foTry netbeans or eclispe

Answer 5

If you're a student ( if you're program's kinda small), it's best if you write it in a software (free) called BlueJ [site: www.bluej.org]. It allows you to easily compile ur program, and even tells you where you messed up!
Ciao!

Answer 6

it's better you go for some java course

Answer 7

you can visit sun official website for some tutorial

link: http://java.sun.com/

Answer 8

http://www.java.com