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148 interview questions on Javafor developers (2025)

Test your technical skills before an interview of Java with 148 corrected questions. Beginner, Intermediate or Expert level.

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148 questions
Easy
25 votes2549 runs
9 comments
Hard
12 votes3086 runs0 comment

A monitor in Java

Thomas De verdièreat Jan 4, 2022
Hard
11 votes3125 runs1 comment
Easy
11 votes3065 runs0 comment
Hard
10 votes3188 runs0 comment

A Customer class has the com.company.model package.

Back-end developer
inheritance
package
Thomas De verdièreat Jan 4, 2022
Hard
10 votes2993 runs0 comment
Easy
10 votes2466 runs
2 comments
Easy
10 votes2386 runs
2 comments
Hard
8 votes3128 runs0 comment
Hard
8 votes3120 runs0 comment

A “synchronized” method

Thomas De verdièreat Jan 4, 2022
Easy
8 votes3026 runs0 comment

What is the classpath for?

Back-end developer
java
classpath
Thomas De verdièreat Jan 4, 2022
Easy
8 votes2383 runs0 comment
Hard
7 votes3109 runs0 comment

Write a finalizer in Java.

Back-end developer
java
finalizer
Thomas De verdièreat Dec 16, 2021
Hard
7 votes3021 runs1 comment
Medium
7 votes3002 runs0 comment
Easy
7 votes2422 runs0 comment