Esfita Infotech Java Developer Interview Questions and Answers

Medium level of coding

Q1. Programs in java
Ans. 
Java programs are written in the Java programming language and run on the Java Virtual Machine (JVM).
• Java programs are typically written in a text editor or an Integrated Development Environment (IDE) like Eclipse or IntelliJ IDEA.

• Java programs are compiled into bytecode by the Java compiler and then executed by the JVM.

• Java programs can be simple console applications, web applications, mobile apps, or enterprise syste...read more
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Q2. Assending and Dessending order
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Q3. Array list by using realtime program
Ans. 
Creating an array list in Java for storing strings in real-time programs.
• Declare and initialize an ArrayList of type String.

• Add strings to the ArrayList using the add() method.

• Access elements in the ArrayList using get() method.

• Iterate through the ArrayList using a loop like for-each or for loop.
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Q4. Create package and call tha class in anotherclassby using object on oops
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Create a package in Java and call a class from that package in another class using object-oriented programming principles.
• Create a package by using the 'package' keyword at the beginning of the Java file.

• Define a class within the package and create an object of that class in another class.

• Import the package in the class where you want to use the class from the package.

• Access the class from the package using the object
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