Java Tutorials - Herong's Tutorial Examples - v8.22, by Herong Yang
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:
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!
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
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
JDK Documentation Installation
Execution Process, Entry Point, Input and Output
Primitive Data Types and Literals
Bits, Bytes, Bitwise and Shift Operations
Managing Bit Strings in Byte Arrays
Reference Data Types and Variables
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