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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 votes2594 runs
10 comments
Hard
12 votes3123 runs0 comment

A monitor in Java

Thomas De verdièreat Jan 4, 2022
Hard
11 votes3162 runs1 comment
Easy
11 votes3087 runs0 comment
Hard
11 votes3025 runs0 comment
Hard
10 votes3219 runs0 comment

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

Back-end developer
inheritance
package
Thomas De verdièreat Jan 4, 2022
Easy
10 votes2508 runs
2 comments
Easy
10 votes2428 runs
2 comments
Hard
8 votes3160 runs
1 comment
Hard
8 votes3153 runs0 comment

A “synchronized” method

Thomas De verdièreat Jan 4, 2022
Easy
8 votes3055 runs0 comment

What is the classpath for?

Back-end developer
java
classpath
Thomas De verdièreat Jan 4, 2022
Easy
8 votes2426 runs0 comment
Hard
7 votes3145 runs0 comment

Write a finalizer in Java.

Back-end developer
java
finalizer
Thomas De verdièreat Dec 16, 2021
Hard
7 votes3043 runs1 comment
Medium
7 votes3033 runs0 comment
Easy
7 votes2466 runs0 comment