logical operators in java
previous NextWhenever we want true or false value (Boolean value) in two or more condition then we use logical operator which gives us boolean value. It can used with any variable. The logical operators used with conditional operators.
java has three Short circuit operators in java- Logical OR Operator(||).
- Logical AND Operator(&&).
- Logical NOT Operator(!).
Logical OR Operator in java
This operator returns the true condition whenever one of the two conditions is true. but both condition are false , then it returns the wrong condition according to condition Which is called a logical OR operator.
Example
import java.util.Scanner;
class Relation{
public static void main(String agrs[]){
Scanner scr = new Scanner(System.in);
boolean x = scr.nextInt(); // true by user
boolean y = scr.nextInt(); // false by user
if(x||y){
System.out.println("x is true");
else{
System.out.println("y is false");
}
}
}
Output :
true // user input
false // user input
true // Returns true whenever one of the two conditions is true.
Logical AND Operator in java
In this operator, both the conditions must be true, only then this operator returns the true condition.
Example
import java.util.Scanner;
class Rohit{
public static void main(String agrs[]){
Scanner scr = new Scanner(System.in);
int age = scr.nextInt();
if((age==45)&&(age>18)){
System.out.println("eligible to vote");
}
else{
System.out.println("not eligible to vote");
}
}
}
Output :
45
eligible to vote
Logical NOT Operator in java
When we want to make any true condition false then we use the logical NOT operator there.
Example
import java.util.Scanner;
public class Rohit{
public static void main(String agrs[]){
Scanner scr = new Scanner(System.in);
int a = scr.nextInt();
int b = scr.nextInt();
if(!(a>b||a>b)){
System.out.println("true");
}
else{
System.out.println("false");
}
}
}
Output :
50 // value of a by user
30 // value of b by user
false