Java Tools Tutorials - Herong's Tutorial Examples - v6.23, by Herong Yang
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-17.0.1\bin;...
Now I should be able to run Java tool commands without the directory path name:
herong> java -version java version "17.0.1" 2021-10-19 LTS Java(TM) SE Runtime Environment (build 17.0.1+12-LTS-39) Java HotSpot(TM) 64-Bit Server VM (build 17.0.1+12-LTS-39, 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!
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
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
Installing Latest JDK on macOS
Installing Latest JDK on Windows
►Adding JDK "bin" Direcotry to Path Setting
javac - The Java Program Compiler
java - The Java Program Launcher
jpackage - Binary Package Builder
javadoc - The Java Document Generator
jdeps - The Java Class Dependency Analyzer
jdeprscan - The Java Deprecated API Scanner
jcmd - The JVM Diagnostic Tool
jconsole - Java Monitoring and Management Console
jstat - JVM Statistics Monitoring Tool
jhsdb - The Java HotSpot Debugger
jvisualvm (Java VisualVM) - JVM Visual Tool
javap - The Java Class File Disassembler
keytool - Public Key Certificate Tool
jrunscript - Script Code Shell
native2ascii - Native-to-ASCII Encoding Converter