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3.6.3. Conditional and relational operators examples
3.6.3. Conditional and relational operators examples
Last updated: 27 January 2013.
The operators <, <=, >, >=, ==, !=, &&, &, ||, | are very easy to use. So let's add a single method called conditionalAndRelationalOperators to illustrate their uses:
public void conditionalAndRelationalOperators(){
int a = 1;
int b = 2;
System.out.println(a < b);
System.out.println(a <= b);
System.out.println(a > b);
System.out.println(a >= b);
System.out.println(a == b);
System.out.println(a != b);
System.out.println( (a < b) && (a > 0) );
System.out.println( (a >= b) & (b < 0) );
System.out.println( (a < b) || (a > 0) );
System.out.println( (a >= b) | (b < 0) );
}
int a = 1;
int b = 2;
System.out.println(a < b);
System.out.println(a <= b);
System.out.println(a > b);
System.out.println(a >= b);
System.out.println(a == b);
System.out.println(a != b);
System.out.println( (a < b) && (a > 0) );
System.out.println( (a >= b) & (b < 0) );
System.out.println( (a < b) || (a > 0) );
System.out.println( (a >= b) | (b < 0) );
}
Here is the class App:
public class App {
public static void main(String[] args) {
new JavaOperators().conditionalAndRelationalOperators();
}
}
public static void main(String[] args) {
new JavaOperators().conditionalAndRelationalOperators();
}
}
The output is:
true
true
false
false
false
true
true
false
true
false
true
false
false
false
true
true
false
true
false
The difference between the operators && and & is that && does not evaluate the right-hand operand if the left-hand operand is false whereas the operator & always evaluates both operands. If you do not specifically want to evaluate the right-hand operand when the left-hand operand is false, the operator && is the one to use.
Likewise, the operator || does not evaluate the right-hand operand if the left-hand operand is true whereas the operator | always evaluates both operands. So the operator || is the one to use if you do not specifically want to evaluate the right-hand operand when the left-hand operand is true.
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