Student_Copy_6_7Lesson_Relational-Operators.pptx

Java

1. Relational Operators Conditional Statements

2. Learning Objectives: After this lesson, students should be able to: Define what a relational operator is. Identify the different relational operators in Java. Use relational operators in simple conditional statements (if-else) . Explain the true or false results of relational comparisons.

3. Relational Operators Relational operators are used to compare two values . The result is always a boolean value — either true or false .

4. Table of Relational Operators These operators work with numbers and characters . They are often used in if statements to make decisions . Operator Meaning Example Result == Equal to 5 == 5 true != Not equal to 5 != 3 true >   Greater than 10 > 7 true <   Less than 3 < 8 true >= Greater than or equal to 5 >= 5 true <= Less than or equal to 4 <= 4 true

5. Conditional Statements These are control structures that make decisions based on a condition. They use relational operators (and sometimes logical ones) to decide what code to run .

6. What is an if statement? An if statement is a decision-making statement in Java. It allows your program to check a condition — and run a block of code only if the condition is true . If ( condition)

7. Example Java compares a and b using relational operators and gives boolean results (true/false) .

8. If else/ Syntax

9. If else

10. Create a Java program using if-else statement that checks the temperature. If the temperature is greater than 25, display 'It's a hot day!', otherwise display 'It's a cool day!'.

11. If else if (Because 85 is not ≥ 90, but it is ≥ 75) symbol ≥ is called the “greater than or equal to” operator in English, and in Java syntax , we write it as: 👉 >=