Testing JDK Installation

Java Tools Tutorials - Herong's Tutorial Examples

∟Java Tools Included in JDK

∟Testing JDK Installation

This section describes how to compile and run Java programs to test JDK installation on Windows system.

When JDK is installed, it provides two commands for us to compile and run Java programs.

"javac class_name.java" - Compiles a Java program stored a file named with the program class name.
"java -cp . class_name" - Runs a compiled Java program. "-cp ." specifies the current directory as the class path.

To try these commands, I used a text editor to enter the following Java program into a file called Hello.java:

class Hello {
   public static void main(String[] a) {
      System.out.println("Hello world!");
   }
}

Then compiled this program in a command window with the "javac" command:

herong> javac Hello.java

Finally, executed the program with the "java" command:

herong> java Hello
Hello world!

Congratulations, I have successfully entered, compiled and executed our first Java program.

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

java - The Java Program Launcher

jar - The JAR File Tool

jlink - The JRE Linker

jmod - The JMOD File Tool

jimage - The JIMAGE File Tool

jpackage - Binary Package Builder

javadoc - The Java Document Generator

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

Miscellaneous Tools

native2ascii - Native-to-ASCII Encoding Converter

JAB (Java Access Bridge) for Windows

Archived Tutorials

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