Lab 1
AIM: Install JDK, write a simple "Hello World" java program, compilation, debugging, executing using java compiler and interpreter.Step 1: Go to link. Click on Download JDK. For java latest version.
Step 2: Next,
- Accept License Agreement
Download latest Java JDK for your version(32 or 64 bit) of java for Windows.

Step 3: Once the download is complete, run the exe for install JDK. Click Next
Step 4: Once the installation is complete click Close
How to set Environment Variables in Java: Path and Classpath
The PATH variable gives the location of executables like javac, java etc. It is possible to run a program without specifying the PATH but you will need to give full path of executable like C:\Program Files\Java\jdk1.8.0_131\bin\javac A.java instead of simple javac A.java
The CLASSPATH variable gives the location of the Library Files.
Let's look into the steps to set the PATH and CLASSPATH
Step 1: Right Click on the My Computer and Select the properties
Step 2: Click on advanced system settings
Step 3: Click on Environment Variables
Step 4: Click on new Button of User variables
Step 5: Type PATH in the Variable name.
Step 6: Copy the path of bin folder which is installed in JDK folder.
Step 7: Paste Path of bin folder in Variable value and click on OK Button.
Note: In case you already have a PATH variable created in your PC, then paste your path separated with a semi-comma (;), edit the PATH variable to
PATH = <JDK installation directory>\bin;%PATH%;
Here, %PATH% appends the existing path variable to our new value
Step 8: You can follow a similar process to set CLASSPATH.
Note: In case you java installation does not work after installation, change classpath to
CLASSPATH = <JDK installation directory>\lib\tools.jar;
Step 9: Click on OK button
Step 10) Go to command prompt and type javac commands.
If you see a screen like below, Java is installed.
Now Here your Hello World Program
HelloWorld.java
class HelloWorld { public static void main(String arg[]) { System.out.println("HelloWorld!!"); } }
1 Comments
tysm helps a lot.....
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