Java is a general-purpose computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible. It is intended to let application developers "write once, run anywhere " (WORA), meaning that compiled Java code can run on all platforms that support Java without the need for recompilation. Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of computer architecture. As of 2016, Java is one of the most popular programming languages in use, particularly for client-server web applications, with a reported 9 million developers. Java was originally developed by James Gosling at Sun Microsystems (which has since been acquired by Oracle Corporation) and released in 1995 as a core component of Sun Microsystems' Java platform "Java (software platform)"). The language derives much of its syntax "Syntax (programming languages)") from C "C (programming language)") and C++, but it has fewer low-level facilities than either of them.

source: Wikipedia

BlueJ Setups

To Download some of My Programsclick here.

Version 4.1.0 Note: See Version 4.0.0 notes for supported devices, minimum requirements and major changes since Version 3.1.7

for Windows 7 or newer, includes JDK (~190 MB)	MSI Installer
for Windows 7 or newer, includes JDK (~190 MB)	Standalone zip
for MacOS X 10.7.3+, includes JDK (~190 MB)	Mac application (zipped)
for Debian,Ubuntu and other Debian-based systems (~20 MB)	Debian Package
all other systems executable jar file (~20 MB)	JAR installer
Source code for BlueJ (~20 MB)	BlueJ Source Code

Version 4.0.0

for Windows 7 or newer, includes JDK (~190 MB)	MSI Installer
for Windows 7 or newer, includes JDK (~190 MB)	Standalone zip
for MacOS X 10.7.3+, includes JDK (~190 MB)	Mac application (zipped)
for Debian,Ubuntu and other Debian-based systems (~20 MB)	Debian Package
all other systems executable jar file (~20 MB)	JAR installer
Source code for BlueJ (~20 MB)	BlueJ Source Code

Version 3.1.7 (Version in Schools)

for Windows 2000, XP, Vista or newer, includes JDK (182 MB)	bluej-bundled-317.msi
for Windows 2000, XP, Vista or newer (11 MB)	bluej-317.msi
for Windows 2000, XP, Vista or newer, to run from USB stick (184 MB)	bluej317-standalone.zip
for MacOS X 10.7.3+ (180 MB; includes JDK 8)	BlueJ-mac-317a.zip
for MacOS X 10.7.2 or earlier (9.8 MB; requires JDK 6)	BlueJ-mac-legacy-317.zip
for Debian,Ubuntu and other Debian-based systems (9.3 MB)	bluej-317.deb
all other systems (executable jar file) 9.8 MB)	bluej-317.jar
Source for BlueJ version 3.1.6 (13 MB)	BlueJ-source-317.zip

p.s. This is a very old post. Made a simple page for my friends to download BlueJ IDE