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what is the difference between if and switch statement job java interview

2,556 views · Published 29 November 2012 · 2:11 · Indexed 12 October 2026

Channel: Interview DOT · 2012 · Science & Technology

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When does the compiler supply a default constructor for a class ? Java Interview Question and Answer :
When does the compiler supply a default constructor for a class ? 

The compiler provides a default constructor for a class if no other constructors are provided.

What is the difference between an if statement and a switch statement ?
The if statement is used to select among two alternatives. It uses a boolean expression to decide which alternative should be executed. 

If(condition){
}else {...}

The switch statement is used to select among multiple alternatives. It uses an int expression to determine which alternative should be executed.
switch(condition - int){
case 1 : ...... 
case 2:....
default :
}




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