#Java for loop shorthand code

The i++ syntax is Javas shorthand way of incrementing an integer by 1. With the for loop, the scope is limited to the loop itself, in the case of the while loop, however, the scope extends to the end of the enclosing block (no big surprise, since the declaration is outside the loop).Īlso, as others have pointed out, in newer versions of Java, there is a shorthand notation for the for loop: for (Iterator it = erator() it. Syntax for (initialization condition afterthought) statement initialization Optional An expression (including assignment expressions) or variable declaration evaluated once before the loop begins. For loops are typically used with primitive type arrays that contain either. Index of outer for loop refers to the rows, and inner loop refers.

In this case, there will be a difference in the scope of the iterator variable. To loop over two dimensional array in Java you can use two for loops. it.hasNext() )Įdit: Actually, the above two forms are not entirely equivalent, if (as in the question) the variable is declared with the init statement.

#Java for loop shorthand code

For example, if you want to show a message 100 times, then rather than typing the same code 100 times, you can use a loop. The correct syntax for the for loop is: for (Iterator it =. In computer programming, loops are used to repeat a block of code. Therefore, our printConsumer is simplified: name -> (name) And we can pass it to forEach: names.forEach (name -> (name)) Since the introduction of Lambda expressions in Java 8, this is probably the most common way to use the forEach method.