The path is required to be set for using tools such as javac, java, etc.
If you are saving the Java source file inside the JDK/bin directory, the path is not required to be set because all the tools will be available in the current directory.
However, if you have your Java file outside the JDK/bin folder, it is necessary to set the path of JDK.
There are two ways to set the path in Java:
1. Temporary
2. Permanent

Table of Contents

1) How to set the Temporary Path of JDK in Windows

To set the temporary path of JDK, you need to follow the following steps:
• Open the command prompt
• Copy the path of the JDK/bin directory
• Write in command prompt: set path=copied_path

For Example:

set path=C:\Program Files\Java\jdk1.6.0_23\bin
Let’s see it in the figure given below:

java 46

2) How to set Permanent Path of JDK in Windows

For setting the permanent path of JDK, you need to follow these steps:
• Go to MyComputer properties -> advanced tab -> environment variables -> new tab of user variable -> write path in variable name -> write path of bin folder in variable value -> ok -> ok -> ok

For Example:
1) Go to MyComputer properties

java 47

2) Click on the advanced tab

java 48

3) Click on environment variables

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4) Click on the new tab of user variables

java 50

5) Write the path in the variable name

java 51

6) Copy the path of bin folder

java 52

7) Paste path of bin folder in the variable value

java 53

8) Click on ok button

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9) Click on ok button

java 55

Now your permanent path is set. You can now execute any program of java from any drive.

Setting Java Path in Linux OS

Setting path in Linux OS is the same as setting the path in the Windows OS. But, here we use the export tool rather than set. Let’s see how to set path in Linux OS:
export PATH=$PATH:/home/jdk1.6.01/bin/
Here, we have installed the JDK in the home directory under Root (/home).
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Introduction to Java

• Java Fundamentals
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Installation and IDE’s for Java Programming Language

• Installation of Java
• Setting up of Eclipse IDE
• Components of Java Program
• Editors and IDEs used for Java Programming
• Writing a Simple Java Program

Data Handling and Functions

• Data types, Operations, Compilation process, Class files, Loops, Conditions
• Using Loop Constructs
• Arrays- Single Dimensional and Multi-Dimensional
• Functions
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OOPS in Java: Concept of Object Orientation

• Object Oriented Programming in Java
• Implement classes and objects in Java
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• Use static keyword
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• Concept of Static and Run time Polymorphism
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• String Handling –String Class
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Exception Handling and Multi-Threading

• Exception handling
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• Introduction to multi-threading in Java
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File Handling in Java

• Input Output Streams
• Java.io Package
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Java Collections

• Wrapper Classes and Inner Classes: Integer, Character, Boolean, Float etc
• Applet Programs: How to write UI programs with Applet, Java.lang, Java.io, Java.util
• Collections: ArrayList, Vector, HashSet, TreeSet, HashMap, HashTable

Java Database Connectivity (JDBC)

• Introduction to SQL: Connect, Insert, Update, Delete, Select
• Introduction to JDBC and Architecture of JDBC
• Insert/Update/Delete/Select Operations using JDBC
• Batch Processing Transaction
• Management: Commit and Rollback

Java Enterprise Edition – Servlets

• Introduction to J2EE
• Client Server architecture
• URL, Port Number, Request, Response
• Need for servlets
• Servlet fundamentals
• Setting up a web project in Eclipse
• Configuring and running the web app with servlets
• GET and POST request in web application with demo
• Servlet lifecycle
• Servlets Continued
• Session tracking and filter
• Forward and include Servlet request dispatchers

Java Server Pages (JSP)

• Fundamentals of Java Server Page
• Writing a code using JSP
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• Introduction to JavaBeans
• ServletConfig and ServletContext
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Hibernate

• Introduction to Hibernate
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POJO (Plain Old Java Object)

• POJO (Plain Old Java Object)
• Persistent Objects
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Spring

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