Is lesson me hum seekhenge:

• Conditional Statements kya hote hain
• if statement
• if-else statement
• else-if ladder

Java me conditional statements ka use decision making ke liye hota hai.

Matlab program kisi condition ko check karta hai aur uske basis par decision leta hai.

Example:

Agar age ≥ 18 → vote kar sakte ho
Agar age < 18 → vote nahi kar sakte

if statement tab use hota hai jab sirf ek condition check karni ho.

Agar condition true hogi to code execute hoga.

if(condition){
    // code execute hoga
}

public class IfExample {

    public static void main(String[] args) {

        int age = 20;

        if(age >= 18){
            System.out.println("You are eligible to vote");
        }

    }

}

You are eligible to vote

Explanation:

age = 20
20 >= 18 → true
Isliye message print hua

if-else tab use hota hai jab do possible situations ho.

• Condition true → if block run
• Condition false → else block run

if(condition){
    // true block
}
else{
    // false block
}

public class IfElseExample {

    public static void main(String[] args) {

        int age = 16;

        if(age >= 18){
            System.out.println("You can vote");
        }
        else{
            System.out.println("You cannot vote");
        }

    }

}

You cannot vote

Explanation:

age = 16
16 >= 18 → false
Isliye else block run hua

Jab multiple conditions check karni ho, tab else-if ladder use karte hain.

Example:

Marks ke basis par grade decide karna

if(condition1){
    // code
}
else if(condition2){
    // code
}
else if(condition3){
    // code
}
else{
    // default code
}

public class GradeExample {

    public static void main(String[] args) {

        int marks = 75;

        if(marks >= 90){
            System.out.println("Grade A");
        }
        else if(marks >= 75){
            System.out.println("Grade B");
        }
        else if(marks >= 50){
            System.out.println("Grade C");
        }
        else{
            System.out.println("Fail");
        }

    }

}

Grade B

Explanation:

marks = 75

marks >= 90 → false
marks >= 75 → true

Isliye Grade B print hua

Conditional statements ka flow kuch is tarah hota hai:

Condition Check
      ↓
   true / false
      ↓
Execute Block

Example:

if(condition)
     ↓
 true → if block
 false → else block

ATM withdrawal example:

if(balance >= withdrawalAmount){
    allow withdrawal
}
else{
    show insufficient balance
}

• Conditional statements decision making ke liye use hote hain
• if statement sirf true condition me run hota hai
• if-else me do situations handle hoti hain
• else-if ladder me multiple conditions check hoti hain
• Conditions me relational operators use hote hain

Example:

>
<
>=
<=
==
!=

1️⃣ Conditional statement kya hota hai?
2️⃣ if aur if-else me kya difference hai?
3️⃣ else-if ladder kab use hota hai?
4️⃣ Java me decision making kaise hoti hai?

Is lesson me humne seekha:

✔ if statement
✔ if-else statement
✔ else-if ladder
✔ decision making logic

Conditional statements program logic ka bahut important part hain.

Next lesson me hum seekhenge:

• Switch Statement
• Nested Conditions
• Ternary Operator