Table of contents
Relational operators in Java are used to compare two values and determine the relationship between them. These operators return a boolean result, indicating whether the specified relationship holds true or false. Here are the relational operators in Java:
Equality (
==
):- Checks if two values are equal.
int a = 5;
int b = 7;
boolean isEqual = (a == b); // false
Inequality (
!=
):- Checks if two values are not equal.
int x = 10;
int y = 10;
boolean isNotEqual = (x != y); // false
Greater Than (
>
):- Checks if the left operand is greater than the right operand.
int p = 15;
int q = 8;
boolean isGreaterThan = (p > q); // true
Less Than (
<
):- Checks if the left operand is less than the right operand.
int m = 5;
int n = 9;
boolean isLessThan = (m < n); // true
Greater Than or Equal To (
>=
):- Checks if the left operand is greater than or equal to the right operand.
int num1 = 12;
int num2 = 12;
boolean isGreaterOrEqual = (num1 >= num2); // true
Less Than or Equal To (
<=
):- Checks if the left operand is less than or equal to the right operand.
int value1 = 7;
int value2 = 10;
boolean isLessOrEqual = (value1 <= value2); // true
Remember
- We can apply relational operator for every primitive except boolean.
Example -
System.out.println(10 < 20); // true
System.out.println('a' < 20); // false
System.out.println('a' > 97); // false
System.out.println(true < false); // '<' cannot be applied to boolean
If we are comparing smaller data type and bigger data type - automatically smaller data type will be promoted to bigger data type.
We cant apply relational operators for object types.
System.out.println("true" < "false"); // '<' cannot be applied to boolean
In Java, a
String
is considered an object. While strings in many programming languages are often treated as primitive data types, Java takes a different approach. In Java, strings are instances of theString
class, which is part of the Java Standard Library (java.lang
package).
- Nesting of relation of it is not allowed otherwise we will get compiled time error.
System.out.println(10 < 20 < 30); // '<' cannot be applied to boolean
Relational operators are commonly used in decision-making structures, such as if
statements, loops, and conditional expressions. They help control the flow of a program based on the relationships between different values. The result of a relational expression is a boolean value (true
or false
).