Difference between revisions of "Operators"
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* Can be applied to '''ANY''' combination of integers, floats or '''chars'''. | * Can be applied to '''ANY''' combination of integers, floats or '''chars'''. | ||
* int's can be compared to doubles | * int's can be compared to doubles | ||
| − | * char's can be compared to int's | + | * '''char's can be compared to int's''' |
<syntaxhighlight lang="java5"> | <syntaxhighlight lang="java5"> | ||
| Line 40: | Line 40: | ||
| + | == Equality Operators == | ||
| + | |||
| + | * '==' and '!=' are used to test for equality. | ||
| + | * Can't compare inequal types. | ||
[[Category:OCPJP]] | [[Category:OCPJP]] | ||
Revision as of 03:29, 31 August 2011
Compound Operators
- +=, -=, *= and /=
- Makes code compact
- Operator precedence for compound assignments : The expression on the right side of the = will always be evaluated first!
int x = 2;
x *= 3 + 5;
//This is equivalent to x = x * (3 + 5) and NOT x = (x*2) + 5.
Relational Operators
- Can be applied to ANY combination of integers, floats or chars.
- int's can be compared to doubles
- char's can be compared to int's
int i = 4;
double pi = 3.14;
if( i > pi) {
System.out.println("Greater than pi");
}
char c = 'C';
if( c > 66) {
System.out.println("C > B");
}
Equality Operators
- '==' and '!=' are used to test for equality.
- Can't compare inequal types.
