The ultimate guide to Java interviews with 300+ real-world questions and answers. Get interview-ready in just a few hours with strategies developed by FAANG engineers.

It’s very common to have interviews testing your knowledge of a programming language you claim to be an expert in.

If you've got an interview coming up on Java soon and need to get up to speed, this is the ideal course for you. You'll refresh your memory on everything from the basics to more advanced functionality you’re likely to be asked about. Even if you're using Java every day, you may not have been exposed to parts of it in some time, so it's always useful to make sure you're updated.

This course features more than 300 of the most commonly asked core Java interview questions that you're likely to face as an experienced software engineer. You'll get to explore questions by topic, as well as see detailed answers for each one, and plenty of live code examples where relevant. Get started today.

The Java Interview Handbook: 300+ Interview Questions

<div class="card-quiz">
   # Question # 1
    <div class="qtn">
        <p>Is Java both pass by reference and pass by value?</p>
    </div>
</div>


<div class="card">
   # Question # 2
    <div class="qtn">
        <p>Give an example of pass by value?</p>
    </div>
    <div class="ans">
        <p>When primitive data types are passed to methods, their values are copied and sent over. Any changes made within the receiving method to the received values don't affect or change the original values. Consider the below snippet</p>
## Pass By Value Example

```java
    void passByValue() {
        float gravity = 9.8f;
        receiveByVale(gravity);
        System.out.println("Gravity acceleration = " + gravity);
    }

    void receiveByVale(float gravity) {
        // Attempt to change gravity
        gravity = 10f;
    }
```
<p>The above code will not change the value of the variable <code class="mthd">gravity</code> in the method <code class="mthd">passByValue</code>
</div>
</div>

<div>
   # Question # 1
    <div>
        <p>Is Java both pass by reference and pass by value?</p>
    </div>
</div>


<div>
   # Question # 2
    <div>
        <p>Give an example of pass by value?</p>
    </div>
    <div>
        <p>When primitive data types are passed to methods, their values are copied and sent over. Any changes made within the receiving method to the received values don't affect or change the original values. Consider the below snippet</p>
## Pass By Value Example

```java
    void passByValue() {
        float gravity = 9.8f;
        receiveByVale(gravity);
        System.out.println("Gravity acceleration = " + gravity);
    }

    void receiveByVale(float gravity) {
        // Attempt to change gravity
        gravity = 10f;
    }
```
<p>The above code will not change the value of the variable <code>gravity</code> in the method <code>passByValue</code>
</div>
</div>

This lesson explains how Java works as pass by value.

Java Ecosystem

Methods

Classes

Interfaces

Inheritance

Lambda Expressions

Generics

Multi-Threading

Memory Management

Collections

Exceptions

Reflection

Serialization

Miscellaneous Topics

Java in Practice

Patterns

The End

Pass by Value