Installing J2SE 1.4.1 on Windows 2000

Download

• Go to http://java.sun.com/j2se/1.4.1/download.html
• Click the download button in the SDK column and next to "Windows (all languages, including English)" in the "Download J2SE(TM) v 1.4.1" section.
• Follow the instructions on the Web pages to download j2sdk-1_4_1-windows-i586.exe to a working directory on your hard disk. This file is about 35 MB.
• Double click on the file name: j2sdk-1_4_1-windows-i586.exe in the working directory in the File Explorer.
• Follow the instruction on the installation window to finish the installation.
• Open a command window to try the java command. If you are getting the following output, your installation was ok: returns with message:

\j2sdk1.4.1\bin\java -version
java version "1.4.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-b21)
Java HotSpot(TM) Client VM (build 1.4.1-b21, mixed mode)

First Java Program

Use NotePad to enter the following Java program into a file called Hello.java:

class Hello {
   public static void main(String[] a) {
      System.out.println("Hello world!"); 	
   }
}

Then compile this program in a command window with the javac command:

\j2sdk1.4.1\bin\javac Hello.java

To execute the program, use the java command:

\j2sdk1.4.1\bin\java -cp . Hello
Hello world!

Congratulations, you have successfully entered, compiled and executed your first Java program.

Upgrade to J2SDK 1.4.1_01

When a new release of J2SDK is available, you can always to go back to the same download Web site, download j2sdk-1_4_1_01-windows-i586.exe, and run it to install. You may use the same command to verify the installation:

\j2sdk1.4.1_01\bin\java -version
java version "1.4.1_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_01-b01)
Java HotSpot(TM) Client VM (build 1.4.1_01-b01, mixed mode)