How to Print a List with a New Line After Every Third Element Using Java Lambda Expressions

How can I print a Java list by adding a new line after every 3rd element using a lambda expression?

List<String> items = Arrays.asList("A", "B", "C", "D", "E", "F", "G");
IntStream.range(0, items.size())
    .forEach(i -> {
        System.out.print(items.get(i) + " ");
        if ((i + 1) % 3 == 0) {
            System.out.println();
        }
    });

In Java, you can utilize lambda expressions and the Stream API to efficiently format the output of a list. This method allows you to insert a new line after every third element, enhancing the readability of the output.

List<String> items = Arrays.asList("A", "B", "C", "D", "E", "F", "G");
IntStream.range(0, items.size())
    .forEach(i -> {
        System.out.print(items.get(i) + " ");
        if ((i + 1) % 3 == 0) {
            System.out.println();
        }
    });

Causes

• You want to format output for better visual separation in console applications.
• Using lambda expressions can reduce boilerplate code.

Solutions

• Use IntStream to iterate over the indices of the list.
• Incorporate a conditional statement to print a new line after every third element.

Mistake: Forgetting to import the necessary packages (e.g., java.util.List and java.util.Arrays).

Solution: Ensure you have the correct imports at the top of your Java file.

Mistake: Not handling lists with fewer than three elements.

Solution: Consider boundary conditions and check list size before processing.