File Extensions (Java and Delphi Cross Reference Guide)

The customary primary source file extension for Java code is ".java" which could contain anywhere from a single class to the entire source code.

Other important files:

• .JAR - Java archive file (compressed code file). Archive that contains multiple Java files and is compressed using .ZIP compression; stores Java classes and metadata and may be digitally signed; runs as a program if the Java Runtime Environment (JRE) is installed on the computer.
• .CLASS - compiled source code which are platform-independent. If a source file has more than one class, each class is compiled into a separate .class file. These .class files can be loaded by any Java Virtual Machine (JVM).

 Java File Extensions (.java)

Common source code file extensions include:

• .BDSPROJ - Project, Borland Developer Studio project file holds compiler options, etc. This is the file you open.
• .DCU - Delphi Compiled Unit file.
• .DFM - Delphi Win32 form file (a text resource file).
• .DPR - Delphi project file. Primary project "source" file.
• .PAS - Delphi unit source file.

Note: Delphi 2009 changed the project file to acommadatte new features. When you open a project file from a previous version, it will be upgraded. In addition to .bdsproj, D2009 also uses a .dproj project file.

 Delphi File Extensions

 Ref: http://delphi.wikia.com/wiki/Delphi_File_Extensions