Convert ArrayList to LinkedHashMap in Java

Rudradev Das
Updated on 17-Jun-2024 22:08:36

2K+ Views

The LinkedHashMap Class is an one type of Hash Map which enables an user to maintain a systematic cronology of the elements present into it. This feature also provides the method of insertion, search and deletion in a quick manner. When we need to convert an array list to a linked hash map, we need to set a key value for this and it reflects as the index of an array list. In terms of the process of the iteration and the data sorting, array list and linked hash map; both are same in nature. Here is a general example ... Read More

Convert Byte Array to File using Java

Rudradev Das
Updated on 17-Jun-2024 19:27:27

6K+ Views

The file class is a representation of directory path name in Java with different formats on different platforms. The file class contains the method of different path name which is responsible for deleting and renaming files by using the new directories. It is an abstract class in a string formation which can be either absolute or relative. Algorithm to of Convert Byte[ ] Array to File In this possible algorithm, we are going to show you how to perform a conversion process on a byte() array node to make it a file. By using this algorithm, we are going to ... Read More

Primitive Data Type vs Object Data Type in Java

Rudradev Das
Updated on 17-Jun-2024 19:17:44

1K+ Views

In a Java environment, every variable contains with some data types, which specify the value and type of a sorted identifier. There are two categories − Primitive Data type Non-Primitive Data type or Object data type The primitive data types are some predefined data types with some specific size and type. This method has some standard values with the types know as byte, short, int, long, float, double, char and boolean. When we want to run a primitive structure, then it stores the data in a stack and assign a value for the process. On the other hand, ... Read More

Print a String in Java

AmitDiwan
Updated on 14-Jun-2024 16:39:02

17K+ Views

In this article, we will understand how to print a string in Java. A string is a pattern of characters and alphanumeric values. The easiest way to create a string is to write −String str = "Welcome to the club!!!"Whenever it encounters a string literal in your code, the Java compiler creates a String object with its value in this case, " Welcome to the club!!!'.As with any other object, you can create String objects by using the new keyword and a constructor. The String class has 11 constructors that allow you to provide the initial value of the string ... Read More

Java Program to Reverse a List

Rudradev Das
Updated on 14-Jun-2024 15:35:05

20K+ Views

What is a Reverse List? Reverse a list is an operation of swapping or interchanging the elements position into a particular list. While you are writing a code in Java, you can easily reverse the order of a certain flow. It is a conventional way of any programming language in computer science. The reverse () method is a collection of class which reverses the position of first element to last element. Last element will earn the first position itself after the termination of the process. A list is an interface where the class method is denoted as a signature with ... Read More

Pass Method Call as Arguments to Another Method in Java

AmitDiwan
Updated on 14-Jun-2024 14:49:44

22K+ Views

In this article, we will understand how to pass method call as arguments to another method. We can call a method from another class by just creating an object of that class inside another class. After creating an object, call methods using the object reference variable.Below is a demonstration of the same −InputSuppose our input is −Enter two numbers : 2 and 3OutputThe desired output would be −The cube of the sum of two numbers is: 125AlgorithmStep 1 - START Step 2 - Declare two variables values namely my_input_1 and my_input_2 Step 3 - We define a function that takes ... Read More

Find the Sum of Elements of an Array in Java

Lakshmi Srinivas
Updated on 14-Jun-2024 14:12:56

47K+ Views

To find the sum of elements of an array.create an empty variable. (sum)Initialize it with 0 in a loop.Traverse through each element (or get each element from the user) add each element to sum.Print sum.Exampleimport java.util.Arrays; import java.util.Scanner; public class SumOfElementsOfAnArray {    public static void main(String args[]){       System.out.println("Enter the required size of the array :: ");       Scanner s = new Scanner(System.in);       int size = s.nextInt();       int myArray[] = new int [size];       int sum = 0;       System.out.println("Enter the elements of the array one by one ");       for(int i=0; i

Calculate Percentage in Java

Lakshmi Srinivas
Updated on 14-Jun-2024 13:37:08

39K+ Views

Percent means percent (hundreds), i.e., a ratio of the parts out of 100. The symbol of a percent is %. We generally count the percentage of marks obtained, return on investment etc. The percentage can go beyond 100% also.For Example, assuming that we have total and a part. So we say what part is what percent of total and should be calculated as −percentage = ( part / total ) × 100AlgorithmBelow is the algorithm to calculate percentage in Java:1. Collect values for part and total 2. Apply formula { percentage = ( part / total ) × 100 } ... Read More

Find GCD or HCF of Two Numbers in Java

Chandu yadav
Updated on 14-Jun-2024 13:21:32

36K+ Views

An H.C.F or Highest Common Factor, is the largest common factor of two or more values.For example factors of 12 and 16 are −12 → 1, 2, 3, 4, 6, 12 16 → 1, 2, 4, 8, 16The common factors are 1, 2, 4 and the highest common factor is 4.AlgorithmDefine two variables - A, BSet loop from 1 to max of A, BCheck if both are completely divided by same loop number, if yes, store itDisplay the stored number is HCFExample: Using Java for loop import java.util.Scanner; public class GCDOfTwoNumbers {    public static void main(String args[]){   ... Read More

Monitor Remote Linux Server Over SSH with rtop

Ayush Singh
Updated on 13-Jun-2024 14:36:52

797 Views

Rtop is a live monitoring tool for remote Linux servers connected over SSH. Users can use Rtop to actively monitor crucial server metrics including CPU, memory, network, and disc utilisation. The application gives admins a real-time overview of system performance and enables them to spot possible problems or bottlenecks. Users can browse through various metrics, organise them, and view precise process-specific information using the interactive interface of Rtop. It provides a practical and effective solution to monitor remote servers closely, making it simpler to identify and rapidly address any performance-related issues. Methods Used Command-Line Monitoring Tools Web-Based Monitoring Tools ... Read More

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