Java - It's Portable

• Java defines not only the language syntax but its detailed semantics as well
• There are no "implementation defined" behaviors in Java
• All implementations must adhere to the Java rules exactly
  • Integer types byte, short, int, long are 8, 16, 32, and 64-bit
  • Floating point types float and double are 32 and 64-bit IEEE 754
  • Character type is 16-bit Unicode
• Architecture neutral byte code format the same regardless of which platform the Java compiler was running on
• Detailed rules in Java Language Specification and/or Java Virtual Machine Specification