Loops-java

🔁 Java Loops Demonstration

This program l.java shows all basic looping techniques in Java — including while, do-while, for, infinite loops, and nested loops — with clear examples and explanations.

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🧠 Concepts Covered

1️⃣ do-while Loop

• Executes at least once, even if the condition is false.
• Condition is checked after the loop body.

int i = 1;
do {
    System.out.println("hii");
    i++;
} while (i > 5);

int p = 1;
while (true) {
    System.out.println("nani");
    p++;
    if (p > 3) break;
}

for (int o = 1; o < 5; o++) {
    System.out.println("DAY " + o);
    for (int h = 9; h < 18; h++) {
        System.out.println(" " + h + "-" + (h + 1));
    }
}

**based on given condition it takes how many times to loop the data , if you know exactly how many times to loop use FOR loop or for unstandard loop which you dont know exactly how many times to loop use WHILE loop and use DO WHILE loop when you want to execute the loop once even the condition is false

🔁 Nested Loops in Java

🧩 What Are Nested Loops?

A nested loop means one loop is inside another loop.
For every single iteration of the outer loop, the inner loop runs completely.

🧠 Common use cases:

• Pattern printing (stars, numbers)
• Working with 2D arrays
• Multiplication tables
• Comparing elements in nested structures

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