Signiwis Technologies Interview Questions, Process, and Tips

28 question multiple option

5 basic coding question they asked

Q1. About oops and multithreading
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Q2. Related arrays and strings
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Q3. No more question they asked
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Q4. What is marker interface
Ans. 
A marker interface is an empty interface that marks a class as having a particular property or behavior.
• Marker interfaces do not have any methods or properties.

• They are used to provide metadata to the compiler or runtime environment.

• Examples include Serializable, Cloneable, and Remote interfaces in Java.

• Marker interfaces can also be used to indicate that a class belongs to a certain group or category.
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Q5. What is functional interface
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Functional interface is a type of interface in Java that contains only one abstract method.
• Functional interface can have any number of default or static methods.

• It is used for implementing lambda expressions and functional programming in Java.

• Examples of functional interfaces include Runnable, Comparator, and Callable.

• Functional interface can be annotated with @FunctionalInterface annotation to ensure it contains only
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Multiple choice question

It was offline coding test

Q1. What polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Animal class with methods like eat() can be inherited by Dog and Cat classes which can override the e
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Q2. Method overloading vs method overriding
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Method overloading is having multiple methods in the same class with the same name but different parameters. Method overriding is having a method in a subclass with the same name and parameters as a method in its superclass.
• Method overloading is achieved within the same class by having multiple methods with the same name but different parameters.

• Method overriding occurs in a subclass when a method has the same name and...read more
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Q3. Abstraction vs interface
Ans. 
Abstraction focuses on hiding implementation details, while interface defines a contract for classes to implement.
• Abstraction allows for hiding complex implementation details from the user.

• Interface defines a contract that classes must follow, but does not provide implementation details.

• Abstraction can be achieved through abstract classes and interfaces in object-oriented programming.

• Example: Abstract class 'Shape' wit...read more
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Q1. Tell me something about Bangalore
Ans. 
Bangalore is known as the Silicon Valley of India, with a vibrant tech industry and pleasant weather.
• Hub for IT companies and startups

• Known for its pleasant weather throughout the year

• Home to prestigious educational institutions like IISc and IIMB

• Famous for its gardens and parks, such as Lalbagh and Cubbon Park
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Q2. Something about your college life
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Mcq question and answer on Java nothing else if you have skill you clear the interview

Mcq question paper on Java j2ee coding compiler ect are

Normal question like * program sum string array

Q1. Communication only nothing else is
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Q2. Water collage day pad student
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Q3. What's is java and features of java
Ans. 
Java is a high-level programming language known for its platform independence and object-oriented features.
• Platform independence - Java programs can run on any platform that has a Java Virtual Machine (JVM)

• Object-oriented - Java supports the principles of encapsulation, inheritance, and polymorphism

• Robust - Java has strong memory management, exception handling, and type safety

• Secure - Java has built-in security feature...read more
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Q4. What is abstraction and describe
Ans. 
Abstraction is the concept of hiding complex details and showing only the essential features of an object or system.
• Abstraction allows developers to focus on what an object does rather than how it does it

• It helps in reducing complexity and improving efficiency in software development

• For example, in object-oriented programming, abstract classes and interfaces are used to define common behaviors without specifying implem
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Basic java which is like error or output

Pyramid like printing star or number

Q1. Java theory question like oops concept and more
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