How to use Java conditionals if and switch
Conditionals are a very important part in any program language. Very useful particularly when you have many options and have to let the computer choose one of them (making a decision) before operating. These kind of computer-decisions are called conditional expressions, and they are usually an equality or inequality that can be evaluated to either true or false.
If-else conditionals in Java
For example, an equality evaluation in Java goes like this:
if( a == b ) //This expressions evaluate if a is equals to b.
{
System.out.println( "a and b are the same.");
}
else //If they are not equal, the message inside the "else" will be printed.
{
System.out.println( "a and b are different.");
}
This can also be written like this:
if( a == b )
{
System.out.println( "a and b are the same.");
}
else if( a != b ) //In Java, != is the opposite of ==
{
System.out.println( "a and b are different.");
}
The last two expressions will show the same result. Now, an inequality evaluation in Java goes like this:
