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What is the difference between a = a + b and a += b?Provide coding snippet for each of the regular expressions.

Explain detailed difference between a = a + b and a += b. Provide coding snippet for each of the regular expressions in java as an example with output of those snippets.Also try to explain the examples using comments.
 



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Posted by Nikheel Bhasmare on October 18th 2017 12:17 PM

Basically a += b means a = a + b but it has 2 different scenarios. Case 1: If data types are same-(check code snippet) a = a + b and a += b will produce same result Case 2: If data types differ (check code snippet) A compound assignment expression of the form E1 op= E2 is equivalent to E1 = (T) ((E1) op (E2)), where T is the type of E1, except that E1 is evaluated only once.To make a=a+b work in this scenario we need to typecast it as a = (byte)(a+b).

/*Case 1*/
                        
int a 3;
            
int b 5;
            
            
b// it will provide output as 8
            
            
+= b//it will also provide output as 8

                       /*Case 2*/

                      
byte a 3;
              
int b 5;
        
            
+= b// will compile
        
            
a+b//won't compile as byte + int = int 
        
            
= (byte)(a+b); // will compile

Posted by anonymous on March 26th 2018 22:31 PM

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My chief is also eager of YouTube comic video lessonshe also watch these even in place of work hehehe..
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