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Programming Articles
Page 1695 of 2547
Java code to print common characters of two strings in alphabetical order
In this article, we will learn to print common characters of two strings in alphabetical order using Java. The program uses arrays to count how often each letter appears in both strings and then compares these counts to identify the common characters. Problem Statement Write a Java program to print common characters of two strings in alphabetical order − Input my_str_1 = "itsasample" my_str_2 = "thisisasample" Output The common characters between the two strings in alphabetical order is :aaeilmpsst Steps to print common characters of two strings in alphabetical order Following are the steps to print common characters of two strings ...
Read MoreJava program to print X star pattern
In this article, we will understand how to print X star pattern using Java. The pattern is formed by using multiple for-loops and print statements. The pattern forms the shape of the letter "X" by printing stars ('X') and spaces in specific positions. The user can provide a number as input, which will determine the size of the pattern. The program uses nested loops to create the required star pattern, where stars are placed at the diagonal positions of a grid. Problem Statement Write a program in Java to print X star pattern. Below is a demonstration of the same: ...
Read MoreJava program to generate random number with restrictions
In this article, we will learn to generate random numbers with restrictions in Java. We will be using the Java Random class from java.util package. Random class Random class is imported from java.util package. The instance of this class is used to generate the random numbers and provides different numbers of different types integer, double, long, float, etc. Steps to generate random numbers with restrictions Following are the steps to generate random numbers with restrictions − Import the Random class from the java.util package. Initialize the Random object to generate random values. ...
Read MoreJava program to set minimum and maximum heap size
The Java heap is a particular memory area which is used to store the objects and represent them as or by an instance in Java Virtual Machine. The Java heap can be shared between two threads as long as the environment is occupied by some running applications. The heaps are sorted in a stack memory and follow the Last In First Out (LIFO) method after the creation of an object in JVM. When the size of the heap memory is compared to the stack, the spare objects are cleared by the GarbageCollector automatically. The heap memory is divided into three ...
Read MoreDifference between mutable and immutable object
In Java, state of the immutable object can’t be modified after it is created but definitely reference other objects. They are very useful in multi-threading environment because multiple threads can’t change the state of the object so immutable objects are thread-safe. Immutable objects are very helpful to avoid temporal coupling and always have failure atomicity and also helpful in multiple threading. Why though? because no one can change the object right? So, it becomes thread-safe, it means it will not cause any unexpected issues when different parts of the program are trying to access that particular object. On the other ...
Read MoreDifference between Applets and Servlets in Java.
In Java, both Applets and Servlets are the programs or applications that run in a Java environment. Applets are designed to provide interactive features that can be embedded into web pages and allow users to engage with content directly through their web browsers. On the other hand, Servlets operate on the server side, they handle requests and responses, which is most important for generating dynamic content in web applications. The main difference in both programs is that their processing is done in different environments. Difference between Applets and Servlets Some of the major differences between Applets and Servlets are as ...
Read MoreJava program to remove path information from a filename returning only its file component
In this article, we will learn to remove path information from a filename returning only its file component using Java. The method fileCompinent() is used to remove the path information from a filename and return only its file component. This method requires a single parameter i.e. the file name and it returns the file component only of the file name. Problem Statement Write a program in Java to remove path information from a filename returning only its file component − Input "c:\JavaProgram\demo1.txt" The input is the file path. Output demo1.txt Steps to remove path information Following are the steps to remove ...
Read MoreJava program to interchange elements of first and last in a matrix across columns
In this article, we will understand how to interchange elements of first and last in a matrix across columns in Java. The matrix has a row and column arrangement of its elements. A matrix with m rows and n columns can be called as m × n matrix. Individual entries in the matrix are called elements and can be represented by a[i][j] which suggests that the element a is present in the ith row and jth column. Problem Statement Write a Java program to interchange elements of first and last in a matrix across columns. Input The matrix is defined as: ...
Read MoreJava program to select all the items in a JList
In this article, we will learn how to select all the items in a JList in Java. The program creates a simple graphical user interface with a list of sports. It uses the setSelectionInterval() method to select all items in the list. This ensures that from the first item to the last item in the list, everything is selected when the program runs. Problem Statement Write a Java program to select all the items in a JList. Below is the demonstration of the same − Input sports[]= {"Football", "Fencing", "Cricket", "Squash", "Hockey", "Rugby"} Output Steps to select all ...
Read MoreGenerate pseudo-random numbers in Python
Many computer applications need random numbers to be generated. However, none of them generate an actual random number. Python, like any other programming language, uses a pseudo-random generator. Python’s random generation is based on the Mersenne Twister algorithm that produces 53-bit precision floats. The technique is fast and thread-safe but not suitable for cryptographic purposes. Python’s standard library contains the random module which defines various functions for handling randomization. The following functions handle random integer number generation. random.seed() − This function initializes the random number generator. ...
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