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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
26 votes2558 runs
9 comments
Hard
12 votes3096 runs0 comment

A monitor in Java

Thomas De verdièreat Jan 4, 2022
Hard
11 votes3133 runs1 comment
Easy
11 votes3072 runs0 comment
Hard
10 votes3196 runs0 comment

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

Back-end developer
inheritance
package
Thomas De verdièreat Jan 4, 2022
Hard
10 votes3003 runs0 comment
Easy
10 votes2475 runs
2 comments
Easy
10 votes2395 runs
2 comments
Hard
8 votes3135 runs0 comment
Hard
8 votes3130 runs0 comment

A “synchronized” method

Thomas De verdièreat Jan 4, 2022
Easy
8 votes3031 runs0 comment

What is the classpath for?

Back-end developer
java
classpath
Thomas De verdièreat Jan 4, 2022
Easy
8 votes2392 runs0 comment
Hard
7 votes3120 runs0 comment

Write a finalizer in Java.

Back-end developer
java
finalizer
Thomas De verdièreat Dec 16, 2021
Hard
7 votes3030 runs1 comment
Medium
7 votes3012 runs0 comment
Easy
7 votes2431 runs0 comment