Old Version of Java Runtime Environment 1.2.1
Selected Version
Java Runtime Environment 1.2.1
Supported Systems
Legacy OS support
Windows ME, 2000, XP, Vista, 7, 8

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Download Java Runtime Environment 1.2.1
Java Runtime Environment 1.2.1

Java Runtime Environment 1.2.1 (11.94 MB)

okay 41 scans reported this version clean

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System Requirements of Java Runtime Environment 1.2.1
  • Windows 95
  • Windows 98
  • Windows ME
  • Windows 2000
  • Windows XP
  • Windows Vista
Program Information of Java Runtime Environment 1.2.1
Version Name:
Java Runtime Environment 1.2.1

File Size:
11.94 MB

MD5 Checksum:

SHA1 Checksum:

Version History of Java Runtime Environment 1.2.1
  • Several bugs were fixed
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About Java

Java can run applications developed using the java programming language and set of development tools. The JVM is a crucial component of the Java platform. The availability of JVMs on many types of hardware and software platforms enables Java to function both as middleware and a platform in its own right. Hence the expression "Write once, run anywhere."

Starting with J2SE 5.0, changes to the JVM specification have been developed under the Java Community Process as JSR 924. As of 2006, changes to specification to support changes proposed to the class file format (JSR 202) are being done as a maintenance release of JSR 924. The specification for the JVM is published in book form, known as "blue book".

Updates : Java Updates

Did You Know?

Sun Java JRE is not a development environment and does not contain development tools such as compilers or debuggers. For development tools, see the Java SDK, .