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Programming Articles
Page 1645 of 2547
How can we hide left/right pane of a JSplitPane programmatically in Java?
In this article, we will learn how to hide the left/right pane of a JSplitPane programmatically in Java. JSplitPane is a simple Swing component in GUI programming that allows hiding one side of the split pane, resulting in a collapsible panel look. JSplitPane A JSplitPane is a subclass of the JComponent class that allows us to arrange two components side by side horizontally or vertically in a single pane. The display areas of both components can also be adjusted at runtime by the user. The important methods of JSplitPane are remove(), removeAll(), resetToPreferredSizes(), and setDividerLocation(). A JSplitPane can generate a ...
Read MoreC++ Program to Perform Inorder Non-Recursive Traversal of a Given Binary Tree
Binary Tree traversal is a process of visiting all the nodes in a certain order. In this article, we will learn how to perform inorder non-recursive traversal of a binary tree using a stack in C++. What is Inorder Non-Recursive Traversal? Inorder traversal is a type of tree traversal, where we first visit the left subtree, then the root node, and then the right subtree. In a non-recursive approach, we are not allowed to use recursive functions to track nodes for traversing the tree. Instead, we can use an explicit stack data structure to track nodes and traverse through ...
Read MoreC++ Program to Perform Dictionary Operations in a Binary Search Tree
A dictionary is a collection of key-value pairs where, keys are unique and used to identify corresponding values in the dictionary. In this article, we will learn how to perform dictionary operations such as insertion, search, and traversal using a binary search tree (BST) in C++. What is BST? A binary search tree (BST) is a tree data structure, where each node has at most two children and follows two rules: the left subtree contains keys less than the node’s key, and the right subtree contains keys greater than the node’s key. This structure is same as how a ...
Read MoreHow to print size of array parameter in a function in C++?
To print the size of an array parameter in a function in C++, we will use the typeOf() operator. In this article, we have passed an array as an argument to the function. Our task is to print the size of this array in C++. Printing Size of Static Array Parameter When we pass an array as an argument of function in C++, it is considered as a pointer. The sizeOf() operator returns the size of the pointer, depending on the system(64-bit or 32-bit) rather than returning the size of the array. Here is a code example explaining this. ...
Read MoreWhat is the lifetime of a static variable in a C++ function?
The lifetime of a static variable in a C++ function exists till the program executes. We can say the lifetime of a static variable is the lifetime of the program. The static variable is a variable that is declared using the static keyword. The space for the static variable is allocated only one time, and this is used for the entirety of the program. In this article, we will understand the lifetime of the static variable and the reason behind its lifetime. Why do Static Variable Exists until program execution? A static variable is initialized ...
Read MoreWhat does an auto keyword do in C++?
The auto keyword in C++ is used to automatically determine the type of variables from their initializer. This means you don’t need to explicitly tell the compiler the variable's data type. It lets the compiler determine the variable's type during compile time.C++ auto KeywordAuto was a keyword that C++ "inherited" from C that had been there nearly forever, but virtually never used. All this changed with the introduction of auto to do type deduction from the context in C++11. Before C++ 11, each data type needs to be explicitly declared at compile time, limiting the values of an expression at ...
Read MoreWhat is arrow operator in C++?
The array operator provides the direct access to array elements using their index. What is Array Operator in C++? The arrow operator in C++ is also known as the member access operator, which is used to access a member of a class, structure, or union with the help of a pointer to an object. The arrow operator allows you to directly access the member, unlike the dot operator, which first dereferences the pointer and then uses the dot operator to access it. So instead of using (*pointer).member, you can directly use pointer->member. Syntax Here is the syntax to access array ...
Read MoreAccessing protected members in a C++ derived class
A class in C++ has the following access modifiers: public, private, and protected, which contain the corresponding class members. The protected members in a class are similar to private members as they cannot be accessed from outside the class, but they can be accessed by derived classes or child classes, while private members cannot. In this article, we will see various examples of how to access protected members in C++ and how it is different from private members. Accessing Protected Variable in C++ In this example, we have initialized a protected variable value in the parent class. We ...
Read MoreDifference Between Structure and Class
In C++, both structures (struct) and classes (class) are user-defined data types, where they both give access to group different data elements (variables) and functions together. However, they still possess a few differences between them. In this article, we will see and go through its differences. Structure (struct) The struct is a user-defined data type, which allows the grouping of variables of different data types, with the members being public by default. This is commonly used to represent simple data structures, where encapsulation is not necessary. A struct can contain data members and member functions, but its primary use is ...
Read MoreCalculate range of data types using C++
Here, we are going to learn how we can calculate the range of the different C++ data types such as signed data types (int, char, float, etc.) and unsigned data types (unsigned char, unsigned int, unsigned float, etc.). Calculating Range of Signed Data Types In C++, signed data types are used to represent both positive and negative integer values. So, to display their range, we use the following method − Calculate the total number of bits, multiply the sizeof bytes by 8. Calculate -2^(n-1) for minimum range ...
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