Releventz Interview Questions and Answers for Experienced

JVM stands for Java Virtual Machine, it is a virtual machine that enables a computer to run Java programs.

• JVM is an abstract computing machine that enables a computer to run Java programs

• It provides a runtime environment in which Java bytecode can be executed

• JVM manages memory, provides security, and facilitates garbage collection

• It translates Java bytecode into machine code that can be executed by the computer's proce...read more

Constructor is a special type of method used to initialize objects, while a method is a block of code that performs a specific task.

• Constructor is called when an object is created, while a method is called to perform a specific task.

• Constructors do not have a return type, while methods have a return type.

• Constructors have the same name as the class, while methods can have any name.

• Example: Constructor - public ClassNam...read more

Static variables belong to the class itself, while non-static variables belong to instances of the class.

• Static variables are shared among all instances of a class

• Non-static variables are unique to each instance of a class

• Static variables can be accessed without creating an instance of the class

• Non-static variables can only be accessed through an instance of the class

JDK is Java Development Kit, JRE is Java Runtime Environment, and JVM is Java Virtual Machine.

• JDK includes tools for developing Java applications.

• JRE provides the libraries and components required to run Java applications.

• JVM is the runtime environment in which Java bytecode is executed.

• Example: JDK includes javac compiler, JRE includes Java libraries, JVM interprets bytecode.

Incident management involves resolving incidents to restore normal service operation, while problem management focuses on identifying and addressing the root cause of recurring incidents.

• Incident management is the process of managing and resolving incidents to restore normal service operation as quickly as possible.

• Problem management involves identifying the root cause of incidents and implementing permanent solutions ...read more

I will investigate the root cause of the crash, analyze logs, and work on resolving the issue to restore application functionality.

• Check application logs for error messages

• Identify the root cause of the crash

• Work with development team to troubleshoot and fix the issue

• Implement temporary workaround if needed

• Test the application thoroughly before restoring it to production