10+ echoVME Interview Questions and Answers

An object in Java is an instance of a class that encapsulates data and behavior.

• Objects have state and behavior

• They are created from classes

• They can be used to represent real-world entities or concepts

• Objects can interact with each other through method calls

Method overloading allows creating multiple methods with the same name but different arguments.

• Method signature must differ in number, type, or order of parameters

• Return type can be different but not the only difference

• Example: public void print(int num), public void print(String str), public void print(int[] arr)

• Overloading improves code readability and reusability

Type casting in Java is the process of converting one data type into another.

• Type casting can be done implicitly or explicitly.

• Implicit type casting is done automatically by the compiler when there is no loss of data.

• Explicit type casting is done manually by the programmer when there is a possibility of data loss.

• Type casting is useful when we want to use a variable of one data type in an expression or assignment of another data type.

• Example: int num = 10; double decimalNum =...read more

Reverse the words in a string without using built-in functions.

• Split the string into an array of words using a space as the delimiter.

• Create a new array and iterate over the words array in reverse order, adding each word to the new array.

• Join the new array of words back into a single string with spaces between each word.

Method overloading is when multiple methods have the same name but different parameters.

• Method overloading allows for more flexibility in method calls.

• The methods must have different parameters, such as different data types or different numbers of parameters.

• Example: public void print(int num) and public void print(String str)

• Overloading constructors is also common in Java.

Inheritance in Java allows a class to inherit properties and methods from another class.

• Inheritance is achieved using the 'extends' keyword.

• The class that is being inherited from is called the superclass or parent class.

• The class that inherits from the superclass is called the subclass or child class.

• Subclasses can access the public and protected members of the superclass.

• Inheritance promotes code reusability and allows for the creation of hierarchical relationships.

To write a post query in RestAssured, use the given() method to set request parameters and body, then use the post() method to send the request.

• Use given() method to set request parameters and body

• Use post() method to send the request

• Example: given().param("key", "value").body("{\"name\": \"John\"}").post("/endpoint")

Path params are part of the URL path, while query params are appended to the URL after a '?'

• Path params are used to identify a specific resource in the URL path, while query params are used to filter or sort the results

• Path params are defined in the URL path itself, like /users/{id}, while query params are added after a '?' like /users?role=admin

• Path params are typically used for required parameters, while query params are used for optional parameters

• Example: Path param - /us...read more

Parameters in API testing include path parameters, query parameters, header parameters, and body parameters.

• Path parameters are used to identify a specific resource in the URL path, e.g. /users/{id}

• Query parameters are used for filtering or sorting data, e.g. /users?status=active

• Header parameters contain additional information for the request, e.g. Content-Type: application/json

• Body parameters are used to send data in the request body, e.g. {"name": "John", "age": 30}