java

Allleetcode

#6 Zigzag Conversion LeetCode Java Problem Solved | Java Leetcode Solution

leetcode beginner problems,java leetcode.
Zigzag Conversion
How to print ZigZag in Java?

What is ZigZag conversion?

What is string ZigZag pattern?

What is example of zigzag?

What is zigzag formula?

What is the formula of high rate in zigzag code?

What is the value of zig zag?
leetcode problem solving java,problem solving,two sum leetcode,leetcode easy problems,leetcode problems solve,leetcode solved problems,leetcode google problems,how to use leetcode effectively,solving leetcode problems,leetcode two sum,leetcode preparation,leetcode beginner problems,java leetcode #softwaretechit #2023 #tech

Read More
Allleetcode

#4 Median of Two Sorted Arrays Leetcode Java Solutions | leetcode problems and solutions java

What is the median of the two sorted arrays?
How do you find the median of two sorted arrays in C++?
How do you find the median of two sorted arrays in Java?
What is median of sorted array C++?
How to find median of two arrays in C?
How do you find the median between two arrays?
leetcode,java,leetcode java,leetcode problems,leetcode solutions,problems,leetcode problems java,leetcode java solutions,leetcode 1,leetcode problem solving java,problem solving,two sum leetcode,leetcode easy problems

Read More
Allleetcode

#3 Longest Substring Without Repeating Characters LeetCode | Java LeetCode Problem #2023

Longest Substring Without Repeating Characters LeetCode | Java LeetCode Problem #2023
leetcode,java,leetcode java,leetcode problems,leetcode solutions,problems,leetcode problems java,leetcode java solutions,leetcode 1,leetcode problem solving java,problem solving,two sum leetcode,leetcode easy problems,leetcode problems solve,leetcode solved problems,leetcode google problems,how to use leetcode effectively,solving leetcode problems,leetcode two sum,leetcode preparation,leetcode beginner problems,java leetcode #softwaretechit #2023 #tech

Read More
AllInterview QuestionsJava Interview

Java Programming Interview Questions

Java Programming Interview Questions
96.
Check if a given string is palindrome using recursion.
97.
Write a Java Program to print Fibonacci Series using Recursion.
98.
Write a Java program to check if the two strings are anagrams.
99.
Write a Java Program to find the factorial of a given number.
100.
Given an array of non-duplicating numbers from 1 to n where one number is missing, write an efficient java program to find that missing number.
101.
Write a Java Program to check if any number is a magic number or not. A number is said to be a magic number if after doing sum of digits in each step and inturn doing sum of digits of that sum, the ultimate result (when there is only one digit left) is 1.
102.
Write a Java program to create and throw custom exceptions.
103.
Write a Java program to reverse a string.
104.
Write a Java program to rotate arrays 90 degree clockwise by taking matrices from user input.
105.
Write a java program to check if any number given as input is the sum of 2 prime numbers.
106.
Write a Java program for solving the Tower of Hanoi Problem.
107.
Implement Binary Search in Java using recursion.

Read More
JavaInterview QuestionsJava Interview

Java Intermediate Interview Questions

Java Intermediate Interview Questions
31.
Apart from the security aspect, what are the reasons behind making strings immutable in Java?
32.
What is a singleton class in Java? And How to implement a singleton class?
33.
Which of the below generates a compile-time error? State the reason.
34.
How would you differentiate between a String, StringBuffer, and a StringBuilder?
35.
Using relevant properties highlight the differences between interfaces and abstract classes.
36.
Is this program giving a compile-time error? If Yes then state the reason and number of errors it will give. If not then state the reason.
37.
What is a Comparator in java?
38.
In Java, static as well as private method overriding is possible. Comment on the statement.
39.
What makes a HashSet different from a TreeSet?
40.
Why is the character array preferred over string for storing confidential information?
41.
What do we get in the JDK file?
42.
What are the differences between JVM, JRE and JDK in Java?
43.
What are the differences between HashMap and HashTable in Java?
44.
What is the importance of reflection in Java?
45.
What are the different ways of threads usage?
46.
What are the different types of Thread Priorities in Java? And what is the default priority of a thread assigned by JVM?
47.
What is the difference between the program and the process?
48.
What is the difference between the ‘throw’ and ‘throws’ keyword in java?
49.
What are the differences between constructor and method of a class in Java?
50.
Identify the output of the below java program and Justify your answer.
51.
Java works as “pass by value” or “pass by reference” phenomenon?
52.
What is the ‘IS-A ‘ relationship in OOPs java?
53.
Which among String or String Buffer should be preferred when there are lot of updates required to be done in the data?
54.
How to not allow serialization of attributes of a class in Java?
55.
What happens if the static modifier is not included in the main method signature in Java?
56.
Consider the below program, identify the output, and also state the reason for that.
57.
Can we make the main() thread a daemon thread?
58.
What happens if there are multiple main methods inside one class in Java?
59.
What do you understand by Object Cloning and how do you achieve it in Java?
60.
How does an exception propagate in the code?
61.
How do exceptions affect the program if it doesn’t handle them?
62.
Is it mandatory for a catch block to be followed after a try block?
63.
Will the finally block get executed when the return statement is written at the end of try block and catch block as shown below?
64.
Can you call a constructor of a class inside the another constructor?
65.
Contiguous memory locations are usually used for storing actual values in an array but not in ArrayList. Explain.
66.
Why does the java array index start with 0?
67.
Why is the remove method faster in the linked list than in an array?
68.
How many overloaded add() and addAll() methods are available in the List interface? Describe the need and uses.
69.
How does the size of ArrayList grow dynamically? And also state how it is implemented internally.

Read More
Interview QuestionsJavaJava Interview

Java 8 Interview Questions for Freshers

Java 8 Interview Questions for Freshers
1.
Describe the newly added features in Java 8?
2.
In which programming paradigm Java 8 falls?
3.
What are the significant advantages of Java 8?
4.
What is MetaSpace? How does it differ from PermGen?
5.
What are functional or SAM interfaces?
6.
Can a functional interface extend/inherit another interface?
7.
What is the default method, and why is it required?
8.
What are static methods in Interfaces?
9.
What are some standard Java pre-defined functional interfaces?
10.
What are the various categories of pre-defined function interfaces?
11.
What is the lambda expression in Java and How does a lambda expression relate to a functional interface?
Java 8 Interview Questions for Experienced
12.
What is the basic structure/syntax of a lambda expression?
13.
What are the features of a lambda expression?
14.
What is a type interface?
15.
What are the types and common ways to use lambda expressions?
16.
In Java 8, what is Method Reference?
17.
What does the String::ValueOf expression mean?
18.
What is an Optional class?
19.
What are the advantages of using the Optional class?
20.
What are Java 8 streams?
21.
What are the main components of a Stream?
22.
What are the sources of data objects a Stream can process?
23.
What are Intermediate and Terminal operations?
24.
What are the most commonly used Intermediate operations?
25.
What is the stateful intermediate operation? Give some examples of stateful intermediate operations.
26.
What is the most common type of Terminal operations?
27.
What is the difference between findFirst() and findAny()?
28.
How are Collections different from Stream?
29.
What is the feature of the new Date and Time API in Java 8?
30.
What are the important packages for the new Data and Time API?
31.
Explain with example, LocalDate, LocalTime, and LocalDateTime APIs.
32.
Define Nashorn in Java 8
33.
What is the use of JJS in Java 8?

Read More
AllInterview QuestionsJavaJava Interview

Java Interview Questions for Freshers

Java Interview Questions for Freshers
1.
Why is Java a platform independent language?
2.
Why is Java not a pure object oriented language?
3.
Difference between Heap and Stack Memory in java. And how java utilizes this.
4.
Can java be said to be the complete object-oriented programming language?
5.
How is Java different from C++?
6.
Pointers are used in C/ C++. Why does Java not make use of pointers?
7.
What do you understand by an instance variable and a local variable?
8.
What are the default values assigned to variables and instances in java?
9.
What do you mean by data encapsulation?
10.
Tell us something about JIT compiler.
11.
Can you tell the difference between equals() method and equality operator (==) in Java?
12.
How is an infinite loop declared in Java?
13.
Briefly explain the concept of constructor overloading
14.
Define Copy constructor in java.
15.
Can the main method be Overloaded?
16.
Comment on method overloading and overriding by citing relevant examples.
17.
A single try block and multiple catch blocks can co-exist in a Java Program. Explain.
18.
Explain the use of final keyword in variable, method and class.
19.
Do final, finally and finalize keywords have the same function?
20.
Is it possible that the ‘finally’ block will not be executed? If yes then list the case.
21.
Identify the output of the java program and state the reason.
22.
When can you use super keyword?
23.
Can the static methods be overloaded?
24.
Why is the main method static in Java?
25.
Can the static methods be overridden?
26.
Difference between static methods, static variables, and static classes in java.
27.
What is the main objective of garbage collection?
28.
What is a ClassLoader?
29.
What part of memory – Stack or Heap – is cleaned in garbage collection process?
30.
What are shallow copy and deep copy in java?
Java Intermediate Interview Questions
31.
Apart from the security aspect, what are the reasons behind making strings immutable in Java?
32.
What is a singleton class in Java? And How to implement a singleton class?
33.
Which of the below generates a compile-time error? State the reason.
34.
How would you differentiate between a String, StringBuffer, and a StringBuilder?
35.
Using relevant properties highlight the differences between interfaces and abstract classes.
36.
Is this program giving a compile-time error? If Yes then state the reason and number of errors it will give. If not then state the reason.
37.
What is a Comparator in java?
38.
In Java, static as well as private method overriding is possible. Comment on the statement.
39.
What makes a HashSet different from a TreeSet?
40.
Why is the character array preferred over string for storing confidential information?
41.
What do we get in the JDK file?
42.
What are the differences between JVM, JRE and JDK in Java?
43.
What are the differences between HashMap and HashTable in Java?
44.
What is the importance of reflection in Java?
45.
What are the different ways of threads usage?
46.
What are the different types of Thread Priorities in Java? And what is the default priority of a thread assigned by JVM?
47.
What is the difference between the program and the process?
48.
What is the difference between the ‘throw’ and ‘throws’ keyword in java?
49.
What are the differences between constructor and method of a class in Java?
50.
Identify the output of the below java program and Justify your answer.
51.
Java works as “pass by value” or “pass by reference” phenomenon?
52.
What is the ‘IS-A ‘ relationship in OOPs java?
53.
Which among String or String Buffer should be preferred when there are lot of updates required to be done in the data?
54.
How to not allow serialization of attributes of a class in Java?
55.
What happens if the static modifier is not included in the main method signature in Java?
56.
Consider the below program, identify the output, and also state the reason for that.
57.
Can we make the main() thread a daemon thread?
58.
What happens if there are multiple main methods inside one class in Java?
59.
What do you understand by Object Cloning and how do you achieve it in Java?
60.
How does an exception propagate in the code?
61.
How do exceptions affect the program if it doesn’t handle them?
62.
Is it mandatory for a catch block to be followed after a try block?
63.
Will the finally block get executed when the return statement is written at the end of try block and catch block as shown below?
64.
Can you call a constructor of a class inside the another constructor?
65.
Contiguous memory locations are usually used for storing actual values in an array but not in ArrayList. Explain.
66.
Why does the java array index start with 0?
67.
Why is the remove method faster in the linked list than in an array?
68.
How many overloaded add() and addAll() methods are available in the List interface? Describe the need and uses.
69.
How does the size of ArrayList grow dynamically? And also state how it is implemented internally.
Java Interview Questions for Experienced
70.
Although inheritance is a popular OOPs concept, it is less advantageous than composition. Explain.
71.
What is the difference between ‘>>’ and ‘>>>’ operators in java?
72.
What are Composition and Aggregation? State the difference.
73.
How is the creation of a String using new() different from that of a literal?
74.
How is the ‘new’ operator different from the ‘newInstance()’ operator in java?
75.
Is exceeding the memory limit possible in a program despite having a garbage collector?
76.
Why is synchronization necessary? Explain with the help of a relevant example.
77.
In the given code below, what is the significance of … ?
78.
What will be the output of the below java program and define the steps of Execution of the java program with the help of the below code?
79.
Define System.out.println().
80.
Can you explain the Java thread lifecycle?
81.
What could be the tradeoff between the usage of an unordered array versus the usage of an ordered array?
82.
Is it possible to import the same class or package twice in Java and what happens to it during runtime?
83.
In case a package has sub packages, will it suffice to import only the main package? e.g. Does importing of com.myMainPackage.* also import com.myMainPackage.mySubPackage.*?
84.
Will the finally block be executed if the code System.exit(0) is written at the end of try block?
85.
What do you understand by marker interfaces in Java?
86.
Explain the term “Double Brace Initialisation” in Java?
87.
Why is it said that the length() method of String class doesn’t return accurate results?
88.
What is the output of the below code and why?
89.
What are the possible ways of making object eligible for garbage collection (GC) in Java?
90.
In the below Java Program, how many objects are eligible for garbage collection?
91.
What is the best way to inject dependency? Also, state the reason.
92.
How we can set the spring bean scope. And what supported scopes does it have?
93.
What are the different categories of Java Design patterns?
94.
What is a Memory Leak? Discuss some common causes of it.
95.
Assume a thread has a lock on it, calling the sleep() method on that thread will release the lock?

Read More
JavaAll

Top 10+ Best Java IDEs & Online Java Compilers | Best Java IDEs In 2022

A Comprehensive List & Comparison of the Top Java IDEs & Online Java Compilers with Pricing & Features. Select the

Read More
10 Best Artificial Intelligence Software|artificial intelligence tools 5 nft games to earn money | Best NFT games for earn crypto Earn Money From Minting NFTs| How to mint NFT for free Top 10 Things You Need To Know About Python List | python lists functions 10 Popular PHP frameworks for web developers| best php frameworks 12 Tips On How To Become a Python Developer | python For beginner 12 Best Nodejs Frameworks for App Development in 2022 how to create google web stories, Steps to create web stories Top 10 Features in Angular 13 Every Developer Should Know | Angular 13 Features 10 Best Angular UI Libraries | angular ui components | angular Project 10 Best Web Development Frameworks in 2022 Frontend & Backend 18 Best Open-Source and Free Database Software | best database software for beginners Top 10+ Best Java IDEs & Online Java Compilers | best java ide for beginners top 10 besic to andvance java books |java books for beginer Top 5 Themes For Blogger, professional blogger theme download BEST Python Courses Online,Top 10 Courses to Learn Python in 2022 Top 13 python libraries for data science