Relational operators usage for data comparison
Use of equality check operator == and other relational operators like not equal to !=, less than < , greater than > , less than or equal to <= and greater than or equal to >= operators.
Learning Objectives
 Understanding the use of six relational operators for equality and other comparison purposes.
Source Code

Run Output
Code Understanding
int a=10,b=10; //integer variables a and b are initialised with 10
boolean c= (a==b);
Since relational operators result in true or false so we shall use a boolean variable c to store the comparison result. Here we made a equality comparison.
System.out.println(“a=10,b=10 so a==b will be “+c);
Since both values are same equality comparison will result in true
c=a!=b; System.out.println(“a=10,b=10 so a!=b will be “+c);
For the same variables being same not equal to will result in false
c=a>5; System.out.println(“a=10 so a>5 will be “+c);
Variable a is set as 10 so its comparison of greater than 5 will result in true
c=b<11; System.out.println(“b=10 so b<11 will be “+c);
Variable b is set as 10 so its comparison of lesser than 11 will result in true
c=a<=10;System.out.println(“a=10 so a<=10 will be “+c);
Variable a is set as 10 so its comparison of lesser than or equal to 10 will result in true
c=b>=10;System.out.println(“b=10 so a>=10 will be “+c);
Variable b is set as 10 so its comparison of greater than or equal to 10 will result in true
Notes
 Some people prefer to call the relational operators as comparison operators.
 The reference document of relational operators can be seen at
https://docs.oracle.com/javase/tutorial/java/nutsandbolts/op2.html
Common Errors
 Some students have problem in remembering the < and > than sign usage. Just a small tip for them. Remember that Hungry Alligator’s mouth simile. The hungry mouth always opens towards the bigger chunk. If 3 < 5 then mouth seems to open towards 5 so 5 is bigger. Since we read from left to right we will say 3 is smaller or lesser than 5. So the symbol will be called less than. Some people remember it by Less than means Left side is pinched.
Suggested Filename(s): RelationalOP.java
sunmitra Created: 3Mar2018  Updated: 3Mar2018