JDB Installation - The Java Debugger (JDB)

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What is JDB Installation?

This chapter clarifies how to install JDB on Windows and Linux based systems. JDB is a part of JDK. As a result, JDK installation is sufficient for using JDB in command prompt.

System Requirements

Here are the system requirements for installing JDB:

JDK
Java SE 2 JDK 1.5 or above
Memory
1 GB RAM (recommended)
Disk Space
No minimum requirement
Operating System Version
Windows XP or above, Linux

Follow the simple steps given below to install JDB on your system.

Step 1: Verifying Java Installation

First of all, you must have Java Software Development Kit (SDK) installed on your system. To confirm this, run any of the two commands liable on the platform you are working on.

If the Java installation has been complete correctly, then it shows the current version and specifications of Java installation. A example output is given in the resulting table.

Platform
Command
Sample Output
Windows
Open command console and type:
\>java –version
Java version "1.7.0_60"
Java (TM) SE Run Time Environment (build 1.7.0_60-b19)
Java Hotspot (TM) 64-bit Server VM (build 24.60-b09,mixed mode)
Linux
Open command terminal and type:
$java –version
java version "1.7.0_25"
Open JDK Runtime Environment (rhel-2.3.10.4.el6_4-x86_64)
Open JDK 64-Bit Server VM (build 23.7-b01, mixed mode)

We assume the readers of this tutorial have Java SDK version 1.7.0_60 installed on their system. In case you do not have Java SDK, download its current version from the link http://www.oracle.com/technetwork/java/javase/downloads/index.html and install it.

Step 2: Setting Up Java Environment

Set the environment variable JAVA_HOME to point to the base directory location where Java is installed on your machine. For example,

Platform
Description
Windows
set JAVA_HOME to C:\ProgramFiles\java\jdk1.7.0_60
Linux
export JAVA_HOME=/usr/local/java

Append the full path of Java compiler location to the System Path.

Platform
Description
Windows
Append the String "C:\Program Files\Java\jdk1.7.0_60\bin" at the end of the system variable PATH.
Linux
export PATH=$PATH:$JAVA_HOME/bin/

Execute the command java -version from the command prompt as explained above.

Step 3: Verifying JDB Installation

Verify the JDB version as follows:

Platform
Command
Sample Output
Windows
Open command console and type:
\>jdb –version
This is JDB version 1.6 (Java SE version 1.7.0_60)
Linux
Open command terminal and type:
$jdb –version
This is JDB version 1.6 (Java SE version 1.7.0_60)
« Previous Topics
Jdb Introduction
Next Topics »
Jdb Syntax
Jdb Options
Jdb Session

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