Adding JDK "bin" Directory to Path Setting

JDK 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 environment 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:\WINDOWS\system32;C:\WINDOWS;
   ...

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 JDK Tutorial Book

►JDK (Java Development Kit)

What Is JDK

Download and Install JDK 20 on macOS

Download and Install JDK 17 on Windows

Writing My First Java Program

►Adding JDK "bin" Directory to Path Setting

JDK Documentation Installation

Check JDK Version on CentOS

Install JDK with "rpm" Command

Install JDK with "yum" Command

Java Date-Time API

Date, Time and Calendar Classes

Date and Time Object and String Conversion

Number Object and Numeric String Conversion

Locales, Localization Methods and Resource Bundles

Calling and Importing Classes Defined in Unnamed Packages

HashSet, Vector, HashMap and Collection Classes

Character Set Encoding Classes and Methods

Character Set Encoding Maps

Encoding Conversion Programs for Encoded Text Files

Java Logging

Socket Network Communication

Datagram Network Communication

DOM (Document Object Model) - API for XML Files

SAX (Simple API for XML)

DTD (Document Type Definition) - XML Validation

XSD (XML Schema Definition) - XML Validation

XSL (Extensible Stylesheet Language)

Message Digest Algorithm Implementations in JDK

Private key and Public Key Pair Generation

PKCS#8/X.509 Private/Public Encoding Standards

Digital Signature Algorithm and Sample Program

"keytool" Commands and "keystore" Files

KeyStore and Certificate Classes

Secret Key Generation and Management

Cipher - Encryption and Decryption

The SSL (Secure Socket Layer) Protocol

SSL Socket Communication Testing Programs

SSL Client Authentication

HTTPS (Hypertext Transfer Protocol Secure)

Outdated Tutorials

References

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