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Articles by Chandu yadav
Page 39 of 81
Add the border to the table with Bootstrap
To add border to a table, use the table-bordered class. You can try to run the following code to implement the table-bordered class −Example Bootstrap Table Footballer Rank Footballer Rank Country Messi 1 Argentina Neymar 2 Brazil Ronaldo 3 Portugal
Read MoreHow do malloc() and free() work in C/C++?
Both malloc() and free() are used to manage memory at runtime. The malloc() is very useful because it allocates memory based on the program needs, while free() releases the memory. But the free() can lead to memory leakage, which is one of its disadvantages. What is malloc()? The function malloc() is used to allocate the requested size of bytes and it returns a pointer to the first byte of allocated memory. It returns null pointer, if it fails. Syntax Following is the basic syntax of malloc(): pointer_name = (cast-type*) malloc(size); Here, pointer_name : Any ...
Read MoreC++ Program to Implement Max Heap
In this article, we will write a C++ program that implements a Max Heap. A Max Heap is a binary tree where the value of each node is greater than or equal to the values of its children. We will explain how to create a Max Heap using arrays and implement operations like insertion and deletion. The article will cover the following topics: What is a Heap? What is Max Heap? What is Heapify? Max Heap Implementation Deletion from ...
Read MoreHow to print out the contents of a vector in C++?
Vectors are similar to the dynamic arrays but vectors can resize. They are sequence containers that can change their size according to the insertion or deletion of elements. Containers are the objects which holds the data of same type. Vectors may allocate some extra storage for the future growth of elements in the vector. Its elements are stored in the contiguous memory. The data is entered at the end of vector. In this article, we will show you how to print the contents of a vector in C++. Example Scenario: std::vector vec = {10, 20, 30, 40, 50}; You ...
Read MoreJava program to deselect a range of columns in a JTable
In this article, we will learn how to deselect a range of columns in a JTable using Java. JTable is a part of the Swing framework in Java, which is used to display and edit tables. Sometimes, we may want to deselect a specific range of columns after selecting columns in a table. This can be done by using the removeColumnSelectionInterval() method. Problem Statement Given a JTable with columns selected, write a Java program to deselect a range of columns from the table. Input A JTable with columns selected.Output The specified range of columns will be deselected. Steps to ...
Read MoreJava program to find if the given number is a leap year?
In this article, we will learn to find if a year is a leap year or not using Java. Finding whether a year is a leap or not is a bit tricky. We generally assume that if a year number is evenly divisible by 4 is a leap year. But it is not the only case. A year is a leap year if − It is evenly divisible by 100 If it is divisible by 100, then it should also be divisible by 400 Except this, all ...
Read MoreJava program to check occurrence of each character in String
To find the occurrence of each character in a string we can use the Map utility of Java. In Map a key cannot be duplicated so make each character of the string a key of Map and provide the initial value corresponding to each key as 1 if this character is not inserted in Map before. Now when a character repeats during insertion as a key in Map increases its value by one. Continue this for each character until all characters of the string get inserted. Problem Statement Write a program in Java to check the occurrence of each character in ...
Read MoreJava program to determine when a Frame or Window is closing
In this article, we will learn to determine when a Frame or Window is closing in Java. We will create a simple window in Java Swing titled "Demo". It displays styled text (italic, black on orange) using a text pane inside a scrollable area. The program also listens for window-closing events, printing a message when you close it. This basic example is how to build a GUI with text styling and event handling.Steps to determine when a Frame or Window is closing Following are the steps to determine when a Frame or Window is closing in Java − ...
Read MoreJava object creation of Inherited class
The constructor is something responsible for the object creation of a particular class in Java. Along with other functions of the constructor, it also instantiates the properties/instances of its class. In Java by default super() keyword is used as the first line of the constructor of every class, here the purpose of this method is to invoke the constructor of its parent class so that the properties of its parent get well instantiated before subclass inherits them and use. The point that should remember here is when you create an object the constructor is called but it is not mandatory that ...
Read MoreJava Program to add Combo Box to JTable
In this article, we will learn how to add a JComboBox to a JTable in Java Swing. The JComboBox allows you to create a drop-down list within a table cell, enabling users to select from predefined options. Steps to add a combo box to JTable Following are the steps to add a combo box to JTable − First import the necessary packages. Initialize a JTable with 5 rows and 5 columns. Create a JComboBox and add items to it. Get the first column of ...
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