Table Of Contents
Latest update [menu]
Version 1.0 updated.
Description [menu]
JAVA INTERVIEW QUESTIONS
1. What is JVM ?
Why is Java called the “Platform Independent Programming Language” ? A Java virtual machine (JVM) is a process virtual machine that can execute Java bytecode. Each Java source file is compiled into a bytecode file, which is executed by the JVM. Java was designed to allow application programs to be built that could be run on any platform, without having to be rewritten or recompiled by the programmer for each separate platform. A Java virtual machine makes this possible, because it is aware of the specific instruction lengths and other particularities of the underlying hardware platform.
2. What is the Difference between JDK and JRE ?
The Java Runtime Environment (JRE) is basically the Java Virtual Machine (JVM) where your Java programs are being executed. It also includes browser plugins for applet execution. The Java Development Kit (JDK) is the full featured Software Development Kit for Java, including the JRE, the compilers and tools (like JavaDoc, and Java Debugger), in order for a user to develop, compile and execute Java applications.
3. What does the “static” keyword mean ?
Can you override private or static method in Java ? The static keyword denotes that a member variable or method can be accessed, without requiring an instantiation of the class to which it belongs. A user cannot override static methods in Java, because method overriding is based upon dynamic binding at runtime and static methods are statically binded at compile time. A static method is not associated with any instance of a class so the concept is not applicable.
4. Can you access non static variable in static context ?
A static variable in Java belongs to its class and its value remains the same for all its instances. A static variable is initialized when the class is loaded by the JVM. If your code tries to access a non-static variable, without any instance, the compiler will complain, because those variables are not created yet and they are not associated with any instance
5. What is Function Overriding and Overloading in Java ?
Method overloading in Java occurs when two or more methods in the same class have the exact same name, but different parameters. On the other hand, method overriding is defined as the case when a child class redefines the same method as a parent class. Overridden methods must have the same name, argument list, and return type. The overriding method may not limit the access of the method it overrides.
How to install Java Interview Questions APK for Android [menu]
Download Java Interview Questions APK file (w3apps.apps.konguapps.learnjavainterview_1_3496246.apk) from SameAPK.com, then follow these steps:
Update Phone Settings
- Go to your phone Settings page
- Tap Security or Applications (varies with device)
- Check the Unknown Sources box
- Confirm with OK
Go to Downloads
- Open Downloads on your device by going to My Files or Files
- Tap the APK file you downloaded (w3apps.apps.konguapps.learnjavainterview_1_3496246.apk)
- Tap Install when prompted, the APK file you downloaded will be installed on your device.
How to install Java Interview Questions APK on Windows 7/8/10 or MAC PC? [menu]
Download Java Interview Questions APK file(w3apps.apps.konguapps.learnjavainterview_1_3496246.apk) from SameAPK.com to your PC (ex: /Users/xxx/Downloads/(w3apps.apps.konguapps.learnjavainterview_1_3496246.apk)), then follow these steps:
Using Emulator:
- Download And Install one Emulator Softwares (Ex: Bluestacks, GenyMotion, NoxPlayer)
- Simple install APK on PC by drag and drop file w3apps.apps.konguapps.learnjavainterview_1_3496246.apk on Emulator screen
Java Interview Questions APK Pros & Cons [menu]
Pros
- This app is safe, it's not require high risk permissions
- Compatible with 32 bit device (most Emulator using 32bit arch CPU)
- Compatible with 64-bit device (some android device and current Bluestacks)
Cons
Everything is good.
