Capgemini Fullstack Java Developer Interview Questions and Answers

Find the second largest element from array of strings

• Sort the array in descending order

• Access the element at index 1 to get the second largest element

Failsafe integrators prioritize system stability by handling errors gracefully, while fail fast integrators prioritize quick detection and resolution of errors.

• Failsafe integrators focus on ensuring the system continues to function even in the presence of errors.

• Fail fast integrators aim to quickly identify and address errors to prevent further issues.

• Failsafe integrators often use techniques like retries, circuit brea...read more

Comparable is for natural ordering; Comparator is for custom ordering of objects in Java.

• Comparable is an interface that defines a natural ordering for objects.

• Comparator is an interface that defines a custom ordering for objects.

• Comparable requires the class to implement the compareTo() method.

• Comparator can be implemented in a separate class or as a lambda expression.

• Example of Comparable: String implements Comparabl...read more

To find the second largest element in a list, iterate through the numbers while tracking the largest and second largest values.

• Initialize two variables: 'largest' and 'secondLargest' to negative infinity.

• Iterate through the list of numbers.

• For each number, update 'largest' and 'secondLargest' accordingly.

• Example: For the list [3, 1, 4, 4, 5], the second largest is 4.

• Ensure to handle cases with duplicates and lists with...read more

Decorators in Angular are functions that allow you to modify or extend the behavior of classes or methods.

• Decorators are used to add metadata to classes or methods in Angular applications.

• They are prefixed with @ symbol and are followed by the decorator name.

• Common decorators in Angular include @Component, @Directive, @Injectable, @Input, @Output, etc.

• Decorators can be used for various purposes such as defining compone...read more

OOPs concept in Java is a programming paradigm that focuses on objects and their interactions.

• OOPs stands for Object-Oriented Programming.

• It involves the use of classes, objects, inheritance, polymorphism, and encapsulation.

• Classes are blueprints for creating objects, and objects are instances of classes.

• Inheritance allows classes to inherit properties and behaviors from other classes.

• Polymorphism allows objects of dif...read more

A palindrome program in Java checks if a given string is the same when read forwards and backwards.

• Convert the string to lowercase to ignore case sensitivity.

• Use two pointers, one starting from the beginning and the other from the end of the string.

• Compare the characters at the two pointers, moving them towards the center until they meet or cross each other.

• If at any point the characters are not equal, the string is no...read more

Creating a table named 'questions' in MySQL.

• Use the CREATE TABLE statement to create the table.

• Specify the table name, column names, and their data types.

• Set primary key, foreign key, and other constraints if required.

• Add any additional properties like auto-increment, default values, etc.

• Execute the SQL statement to create the table.