Giving multiple conditions in for loop in Java [closed]

Question

I was searching for "How to give multiple conditions in a for loop?" But there are no direct answers given.

After some research I found the correct way. Conditions should not be comma(,) or semicolon(;) separated. We can use the && operator to join both the conditions together.

for( initialization ; condition1 && condition2 ; increment)

Example:

for(int j= 0; j < 6 && j < ((int)abc[j] & 0xff) ; j++ )  { // } 

Hope this helps the new Java developers.

Answer 1

You can also use "or" operator,

for( int i = 0 ; i < 100 || someOtherCondition() ; i++ ) {   ... } 

Answer 2

A basic for statement includes

• 0..n initialization statements (ForInit)
• 0..1 expression statements that evaluate to boolean or Boolean (ForStatement) and
• 0..n update statements (ForUpdate)

If you need multiple conditions to build your ForStatement, then use the standard logic operators (&&, ||, |, ...) but - I suggest to use a private method if it gets to complicated:

for (int i = 0, j = 0; isMatrixElement(i,j,myArray); i++, j++) {     // ... } 

and

private boolean isMatrixElement(i,j,myArray) {   return (i < myArray.length) && (j < myArray[i].length);  //  stupid dummy code! }