Java is Strongly Typed or Weakly Typed ?

August 16, 2006 by bhuvans

The Java programming language is strongly-typed, which means that all variables must first be declared before they can be used.
This involves stating the variable’s type and name, as you’ve already seen:

int gear = 1;

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Posted in Interview Q & A, Java, Java Q & A, Technical | 19 Comments

19 Responses

on August 16, 2006 at 3:02 pm | Reply 974231 Blog Verification

974231 Blog Verification

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on April 18, 2007 at 2:01 pm | Reply ibrahim

thax please for your service,but am i correct to say that java is strongly typed because you cannot assign a floating point value as it is in c
- on May 11, 2009 at 12:52 am | Reply Auxilius
  
  Where did you read this crap…???
  - on September 6, 2010 at 8:38 am Norton
    
    ibrahim:
    >thax please for your service,but am i correct to say that >java is strongly typed because you cannot assign a >floating point value as it is in c
    
    THATS WHY C is weakly typed language….
on December 29, 2007 at 4:30 am | Reply Rico Secada

This has nothing to do with strong or weakly typed.

A programming language is weakly typed when it allows conversion between different types, like converting an int into a char.

A strongly typed language doesn’t allow conversion.
on March 23, 2008 at 8:12 am | Reply Anshita

Bingo…..

now ur saying that java dun allow type casting….

you should go through basic books of java before saying aneething!!
- on May 11, 2009 at 12:53 am | Reply Auxilius
  
  He meant that it does not allow implicitly. you must do it explicitly.
on April 3, 2008 at 9:04 pm | Reply TiNmAn

@Anshita- Learn the basics of English before saying anything, to avoid looking like an idiot.
on May 8, 2008 at 2:10 am | Reply Ace

There is a difference between type casting and strongly typed. Type casting allows one to utilize the value of a variable and convert it to the new type. Strongly typed means a variable must be declared before it is used. would be like trying to take float x and then say x = “test”. This would not work in a strong typed language like Java.
on June 19, 2008 at 12:15 am | Reply John

Anshita – Are you from a circus or something?
on July 18, 2008 at 12:29 pm | Reply A.ANSARI(MCA FROM JAMIA HAMDARD NEW DELHI)

python is a strongly typed language how???
on July 18, 2008 at 12:33 pm | Reply A.ANSARI(MCA FROM JAMIA HAMDARD NEW DELHI)

java is strongly typed language.
- on May 11, 2009 at 12:56 am | Reply Auxilius
  
  It is. But I have confusion. After auto boxing , is strongly typed as it does the conversion internally.
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on December 9, 2011 at 2:59 am | Reply satnam

hi all, basically strongly typed means we have to declare a variable by specifying a specific type like int float etc. and secondly once variable is declared we can not change the data type of that variable at run time. (ssubhi_2003@yahoo.com)
on January 14, 2012 at 6:12 pm | Reply S

Java primitive types are ‘strongly typed’ the java types derived from Object are not. In fact boxing and unboxing is very common for types derived from Object. You can create methods that accept Object types, and pass in anything you like. In humble opinion, Java can be as tightly typed as the developer wants it to be.
on March 15, 2012 at 3:38 pm | Reply Manu

Java is a strongly typed language as it allows compile time and run time checks on types.
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