java left logo
java middle logo
java right logo
 

Home arrow Java SE Tips
 
 
Main Menu
Home
Java Tutorials
Book Reviews
Java SE Tips
Java ME Tips
Java EE Tips
Other API Tips
Java Applications
Java Libraries
Java Games
Java Network
Java Forums
Java Blog




Most Visited Tips
Java SE Tips
Java ME Tips
Java EE Tips
Other API Tips
Java Applications
Java Libraries
Java Games
Book Reviews
Top Rated Tips
Java SE Tips
Java ME Tips
Java EE Tips
Other API Tips
Java Applications
Java Libraries
Java Games
Book Reviews


Statistics
Registered Users: 4098
Java SE Tips: 614
Java ME Tips: 202
Java EE Tips: 183
Other API Tips: 779
Java Applications: 298
Java Libraries: 209
Java Games: 16
Book Reviews:
 
 
 
What are the Java data types E-mail
User Rating: / 26
PoorBest 

Java has two groups of data types, primitive data types and object references.

Java Primitive Data Types

Data TypePurposeContentsDefault Value*
booleanTruth valuetrue or falsefales
charCharacterUnicode characters\u0000
byteSigned integer8 bit two's complement(byte) 0
shortSigned integer16 bit two's complement(short) 0
intSigned integer32 bit two's complement0
longSigned integer64 bit two's complement0L
floatReal number32 bit IEEE 754 floating point0.0f
doubleReal number64 bit IEEE 754 floating point0.0d

One way to remember the Java primitive data types is by using this mnemonic aid: Be Careful, Bears Shouldn't Ingest Large Furry Dogs.

Instance variables are assigned default values; local variables are not assigned default values.

Java object references are variables which hold references to objects. Unlike Java primitive data types which store actual data, object references store only a reference to the actual data object.


 Related Tips

 
< Prev   Next >

Page 1 of 0 ( 0 comments )

You can share your information about this topic using the form below!

Please do not post your questions with this form! Thanks.


Name (required)


E-Mail (required)

Your email will not be displayed on the site - only to our administrator
Homepage(optional)



Comment Enable HTML code : Yes No



 
       
         
     
 
 
 
   
 
 
java bottom left
java bottom middle
java bottom right
RSS 0.91 FeedRSS 1.0 FeedRSS 2.0 FeedATOM FeedOPML Feed

Home - About Us - Privacy Policy
Copyright 2005 - 2008 www.java-tips.org
Java is a trademark of Sun Microsystems, Inc.