boolean keyword in Java
The boolean keyword is used to declare a variable as a boolean type, which represents only either true or false.
For example:
- boolean isActive;
- boolean isAdmin;
boolean isActive; boolean isAdmin;
The boolean keyword can be used to declare a type of a method parameter as below:
- public void sendEmail(boolean isAdmin) {
- if(isAdmin){
- //Send email only for Admin
- }
- }
public void sendEmail(boolean isAdmin) {
if(isAdmin){
//Send email only for Admin
}
}
The boolean keyword can also be used to declare return type of a method as below:
- public boolean isSeniorCitizen() {
- if(age >=60){
- return true;
- }
- else{
- return false;
- }
- }
public boolean isSeniorCitizen() {
if(age >=60){
return true;
}
else{
return false;
}
}
