Adding JDK "bin" Directory to Path Setting

Java Tutorials - Herong's Tutorial Examples

∟Adding JDK "bin" Directory to Path Setting

This section provides a tutorial on how to add JDK 'bin' directory to the 'path' system envirnoment variable.

In order to run Java compiler and JVM by typing their program file name without the directory path name, I updated the "path" environment variable on my Windows computer:

Open "Control Panel > System and Security > System".
Click "Advanced system settings".
Click "Environment Variables".
Select "System variables > Path" and click "Edit".
Add "C:\Progra~1\java\jdk-17.0.1\bin;" to the beginning of the current path list.
Click "OK" to save the change.

Then I ran the "echo %path%" command in a new command window to confirm the change:

herong> echo %path%

C:\Progra~1\java\jdk-17.0.1\bin;
   C:\Program Files\Common Files\Oracle\Java\javapath;
   C:\ProgramData\Oracle\Java\javapath;
   ...

Now I should be able to run Java commands without the directory path name:

herong> java -version

java version "17.0.1" 2021-10-19 LTS
...

herong> javac hello.java

herong> java Hello

Hello world!

Now I am ready to play with Java tools included in Oracle JDK package!

Adding JDK bin Directory to Path Setting — Adding JDK "bin" Directory to Path Setting

You can also set a new environment variable called "java_home" to avoid typing the full path name to access Java tool program files:

herong> set java_home=C:\Progra~1\java\jdk-17.0.1

herong> %java_home%\bin\java -version

java version "17.0.1" 2021-10-19 LTS
...

Table of Contents

About This Book

►JDK - Java Development Kit

Downloading and Installing JDK on Mac

Downloading and Installing JDK on Windows

►Adding JDK "bin" Directory to Path Setting

Downloading and Installing JDK on Linux

Writing My First Java Program

JDK Documentation Installation

Execution Process, Entry Point, Input and Output

Primitive Data Types and Literals

Control Flow Statements

Bits, Bytes, Bitwise and Shift Operations

Managing Bit Strings in Byte Arrays

Reference Data Types and Variables

Enum Types and Enum Constants

StringBuffer - The String Buffer Class

System Properties and Runtime Object Methods

Generic Classes and Parameterized Types

Generic Methods and Type Inference

Lambda Expressions and Method References

Java Modules - Java Package Aggregation

Execution Threads and Multi-Threading Java Programs

ThreadGroup Class and "system" ThreadGroup Tree

Synchronization Technique and Synchronized Code Blocks

Deadlock Condition Example Programs

Garbage Collection and the gc() Method

Assert Statements and -ea" Option

Annotation Statements and Declarations

Java Related Terminologies

Archived Tutorials

References

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