In this Page contains Most important coding question related to Java 8. There are lots of new features added in Java 8 which has also changed some syntax.If you are working on old Java then you should practice the lot of program to accept the changes made in Java 8. Also during interview, Interviewer will surely ask you to write some program on Java 8.So to clear coding round or to solve the coding question asked you to write in Java 8, you should also prepare for writing the code. 

Java 8 coding interview questions

Q1). Java 8 Program to add prefix and suffix to the String? Ans:To write a program in java to add prefix and suffix in a given String we will use StringJoiner class, a newly added in Java 8.In the below program We will be adding “#“ and “#” as a prefix and suffix in the string.Program Output

Q2). Java 8 Program to Print ten random numbers using forEach? Ans:Below is the program to generate 10 random number using forEach. Here we are using Random class to generate Random number.ProgramOutput

Q3). Java 8 program to iterate a Stream using the forEach method? Ans:In the below program we have create a List of array type. And We are iterating this using forEach after converting into stream.Program to iterate stream using forEach in java 8 Output

Q4). Java 8 program to find the Minimum number of a Stream? Ans:To find the minimum number in stream, we will use comparator.comparing() method which will take integer value from Stream.Below is the program to find minimum in Stream.ProgramOutput