Loops

Loops in Java:

1. While Loop:

Syntax:

while (loop-continuation-condition) {
 // Loop body
 statements;
}

2. Do-while Loop:

Syntax:

3. For Loop:

Syntax:

4. For-each Loop:

• We generally use this type of loop to iterate over the elements of a list of items. (Could be an ArrayList as an example)
• If we want to keep track of the index, or we want to skip some elements, it is better to use normal for loop.

Syntax:

for (type var : array) 
{ 
// Loop body
statements using var;
}

It is same as this for loop:

for (int i=0; i<arr.length; i++) 
{ 
// Loop body
    type var = arr[i];
    statements using var;
}

5. Nested Loops: