Looping

Looping is done in the same way as in other languages.

Loops can execute a block of code as long as a specified condition is reached.
Loops are handy because they save time, reduce errors, and they make code more readable.


While Loop:-

The while loop loops through a block of code as long as a specified condition is true
Example:-
int i = 0; while (i < 5) { System.out.println(i); i++; }

Do While:-

The do/while loop is a variant of the while loop. This loop will execute the code block once, before checking if the condition is true, then it will repeat the loop as long as the condition is true.
Example:-
int i = 0; do { System.out.println(i); i++; } while (i < 5);

For Loop:-

When you know exactly how many times you want to loop through a block of code, use the for loop instead of a while loop
Syntax:-
for (statement 1; statement 2; statement 3) { // code block to be executed }

Statement 1 is executed (one time) before the execution of the code block.
Statement 2 defines the condition for executing the code block.
Statement 3 is executed (every time) after the code block has been executed.


There is also a "for-each" loop, which is used exclusively to loop through elements in an array

Syntax:-
for (type variableName : arrayName) { // code block to be executed }

Example:-

String[] cars = {"Volvo", "BMW", "Ford", "Mazda"}; for (String i : cars) { System.out.println(i); }