Java Interview Coding Problems Using Java 17 vs. Java 8 Features

In this post, we will explore some important Java Coding Interview questions with their solutions using Java 17 & higher versions. We will also focus on the improvements that we have made in Java 17 as compared to Java 8. This will also be helpful to those who are migrating their project from JDK 8 to JDK 17.

Why to use Java 17 ?

Let’s explore the facts why Java 17 and higher versions are so important to solve our daily programming problems from the table below:

Problem#1: E-commerce Order Processing

Write a program to determine the shipping category for e-commerce orders based on item type, quantity, and urgency:

Item Type:

• Electronics: Require immediate shipping.
• Grocery: Ship only if the quantity is above 5.
• Furniture: Not eligible for express shipping.

Urgency:

• Express orders incur additional charges of $50.

Use Java 8 and Java 17 to implement and compare.

Java 8 Solution

import java.util.Arrays;
import java.util.List;

class Order {
    String itemType;
    int quantity…