47 interview questions on Java - Fundamentals for developers (2024)

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concatenation

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47 interview questions on Java - Fundamentalsfor developers (2024)

Test your technical skills before an interview of Java - Fundamentals with 47 corrected questions. Beginner, Intermediate or Expert level.

47 interview questions on Java - Fundamentalsfor developers (2024)

Test your technical skills before an interview of Java - Fundamentals with 47 corrected questions. Beginner, Intermediate or Expert level.

Write a Java program that prints 'welovedev'.

How should a package be named in Java?

What is the difference between an interface and an abstract class in Java?

How to concatenate two strings of characters in Java?

Are arrays primitives types in Java?

Add elements to an ArrayList in Java

How to print an array in Java

What is “AssertEquals” used for in a Java Unit test?

Write a valid code comment in Java

Count the number of words in a string in Java

List the annotations that can be used in a JUnit test class.

How to call an interface in a java class?

What are the modifiers that cannot be used with enums in Java?

Which of the following statements applies to methods of an interface in Java? (from java 8)

Given the following code, what will be displayed in the console?

Reverse a string in Java

Test the autoboxing feature in Java.

What is the output of the following Java code?

What does `--` do in Java?

Declare a string array in Java