Given a List list object, I know of the following ways to loop through all elements: Basic for loop (of course, there're equivalent while / do while loops as well) // Not recommended (see below)!įor (int i = 0 i iter = erator() iter. You want to iterate through each character in a string, performing an operation on each character as. We can initialize the variable, check condition and increment/decrement value. The simplest or rather we can say naive approach to solve this problem is to iterate using a for loop by using the variable ‘ i’ till the length of the string and then print the value of each character that is present in the string. The statement for ( ) is similar to while (true) Note: This above said is crux of advanced programming as it is origin of logic building in programming. Being somewhat new to the Java language I'm trying to familiarize myself with all the ways (or at least the non-pathological ones) that one might iterate through a list (or perhaps other collections) and the advantages or disadvantages of each. A simple for loop is the same as C / C++. Using iterators (Optimal approach) Method 1: Using for loops. Usecase 1: Providing expression in for loop is a must For loop must consist of a valid expression in the loop statement failing which can lead to an infinite loop.
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