Adding JDK "bin" Direcotry 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 tools by typing their program file name without the directory path name, I updated the "path" environment variable on my Windows computer:

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

herong> echo %path%

C:\Progra~1\java\jdk-12.0.1\bin;...

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

herong> java -version

java version "12.0.1" 2019-04-16
Java(TM) SE Runtime Environment (build 12.0.1+12)
Java HotSpot(TM) 64-Bit Server VM (build 12.0.1+12, mixed mode, sharing)

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 Direcotry to Path Setting
Adding JDK "bin" Direcotry 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-12.0.1

herong> %java_home%\bin\java -version

java version "12.0.1" 2019-04-16
Java(TM) SE Runtime Environment (build 12.0.1+12)
Java HotSpot(TM) 64-Bit Server VM (build 12.0.1+12, mixed mode, sharing)

If you are using a macOS computer, all Java commands are automatically linked to their latest versions. For example:

herong$ which java 
 /usr/bin/java

herong$ ls -l /usr/bin/java 

lrwxr-xr-x  1 root  wheel  74 Mar 23  2017 /usr/bin/java -> \
  /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java

Table of Contents

 About This Book

 Java Tools Terminology

Java Tools Included in JDK

 Installing Latest JDK on macOS

 Installing Latest JDK on Windows

Adding JDK "bin" Direcotry to Path Setting

 Testing JDK Installation

 Listing Java Tools in JDK

 javac - The Java Program Compiler

 jar - The JAR File Tool

 jlink - The JRE Linker

 jmod - The JMOD File Tool

 jimage - The JIMAGE File Tool

 jpackage - Binary Package Builder

 java - The Java Program Launcher

 jdeps - The Java Class Dependency Analyzer

 jdeprscan - The Java Deprecated API Scanner

 jdb - The Java Debugger

 jcmd - The JVM Diagnostic Tool

 jconsole - Java Monitoring and Management Console

 jstat - JVM Statistics Monitoring Tool

 JVM Troubleshooting Tools

 jhsdb - The Java HotSpot Debugger

 jvisualvm (Java VisualVM) - JVM Visual Tool

 jmc - Java Mission Control

 javap - The Java Class File Disassembler

 keytool - Public Key Certificate Tool

 jarsigner - JAR File Signer

 jshell - Java Language Shell

 jrunscript - Script Code Shell

 serialver - serialVersionUID Generator

 native2ascii - Native-to-ASCII Encoding Converter

 Outdated Tutorials

 References

 Full Version in PDF/EPUB