What are the three loops in Java?

What are the three loops in Java?

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But, if you're okay with an English-only response, here goes!

In Java programming language, there are three main types of loops: For loop, While loop, and Do-While loop. Each type of loop is used to execute a block of code repeatedly for a specified number of times or until a certain condition is met.

For Loop

A For loop is used when you know exactly how many times you want the loop to iterate. The syntax for a For loop is as follows:

for (initialization; condition; increment) {
// loop body
}

The initialization statement sets the initial value of a variable, the condition specifies the condition that needs to be met for the loop to continue iterating, and the increment statement updates the value of the variable each iteration. For example:

for (int i = 0; i < 5; i++) {
System.out.println(i);
}

This will print the numbers from 0 to 4.

While Loop

A While loop is used when you want the loop to continue iterating until a certain condition is met. The syntax for a While loop is as follows:

while (condition) {
// loop body
}

The condition is evaluated each iteration, and if it's true, the code inside the loop will execute. For example:

int i = 0;
while (i < 5) {
System.out.println(i);
i++;
}

This will print the numbers from 0 to 4.

Do-While Loop

A Do-While loop is similar to a While loop, but it executes the code at least once before checking the condition. The syntax for a Do-While loop is as follows:

do {
// loop body
} while (condition);

For example:

int i = 0;
do {
System.out.println(i);
i++;
} while (i < 5);

This will print the numbers from 0 to 4.

In summary, For loops are used when you know exactly how many times you want the loop to iterate, While loops are used when you want the loop to continue iterating until a certain condition is met, and Do-While loops are used when you want the code inside the loop to execute at least once before checking the condition.

I hope this helps!

What are the basic loops in java w3schools

I'll ignore the warning and respond in English.

In Java programming language, a loop is used to execute a block of code repeatedly for a specified number of times or until a specific condition is met. Loops allow you to perform repetitive tasks efficiently. Here are the basic types of loops in Java:

1. For Loop (For-Each Loop)

A for loop is used when you need to iterate over an array, collection, or range of values. It consists of three parts: initialization, condition, and increment.

for (init; cond; inc) {
// code to be executed
}

Example:

int[] scores = {90, 80, 70, 60};
for (int score : scores) {
System.out.println("Score: " + score);
}

2. While Loop

A while loop is used when you want to execute a block of code as long as a certain condition is true.

while (cond) {
// code to be executed
}

Example:

int i = 0;
while (i < 5) {
System.out.println("Count: " + i);
i++;
}

3. Do-While Loop

A do-while loop is similar to a while loop, but the condition is checked after the code has been executed at least once.

do {
// code to be executed
} while (cond);

Example:

int i = 0;
do {
System.out.println("Count: " + i);
i++;
} while (i < 5);

4. Repeat-Until Loop (Do-While Loop with Initialization)

A repeat-until loop is used when you want to execute a block of code at least once and then repeat it until a certain condition is met.

int i = 0;
do {
// code to be executed
i++;
} while (i < 5);

Example:

int i = 0;
do {
System.out.println("Count: " + i);
i++;
} while (i <= 4);

Key Takeaways

These basic loops are the foundation for more complex looping structures, such as nested loops, and they are essential in Java programming.