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Articles on Trending Technologies
Technical articles with clear explanations and examples
What is the importance of the CardLayout class in Java?
In this article, we will learn about the importance of the CardLayout class in Java. In Swing, we usually have to manage a set of views and panels in a single container. The CardLayout class provides you with a flexible and powerful method to complete this, allowing you to switch between various components, such as cards in a deck. What is CardLayout? CardLayout is a layout manager in the Java AWT package. It is different from the other layouts, where the other layout managers attempt to display all the components within the container at once, the CardLayout displays only one ...
Read MoreHow can we disable the maximize button of a JFrame in Java?
In this article, we will learn to disable the maximize button of a JFrame in Java. When creating Swing GUIs in Java, we might occasionally want to prevent users from maximizing certain windows. Removing the maximize button will do the trick for dialog windows, tool windows, or any window where a fixed size needs to be kept. What is a JFrame? A JFrame is a class from javax. swing package and it can extend java.awt.frame class. It is a top-level window with a border and a title bar. A JFrame class has many methods that can be used to customize ...
Read MoreHow can we implement a JToggleButton in Java?
In this article, we will learn about the implementation of a JToggleButton in Java. The JToggleButton is a basic Swing component in Java that is used to represent a two-state button, i.e., selected or unselected. It is therefore the best component to use when adding on/off or mode selection functionality to Java applications. JToggleButton A JToggleButton is an extension of AbstractButton, and it can be used to represent buttons that can be toggled ON and OFF. When JToggleButton is pressed for the first time, it remains pressed and it can be released only when it is pressed for the second ...
Read MoreWhat is the use of setBounds() method in Java?
The layout managers are used to automatically decide the position and size of the added components. In the absence of a layout manager, the position and size of the components have to be set manually. The setBounds() method in Java is used in such a situation to set the position and size. To specify the position and size of the components manually, the layout manager of the frame can be null. The setBounds() Method The setBounds() is a method inherited from Java's AWT (Abstract Window Toolkit) and Swing libraries that enables manual positioning and sizing of GUI components. The setBounds() ...
Read MoreC++ Program to Find kth Largest Element in a Sequence
In this article, we have an unsorted array. Our task is to find the kth maximum element of that array using C++. Here is an example to understand the meaning of k. If k =2, you can say the second highest value, for k =3, the third highest value. The approaches that we will be using are mentioned below: Using Sorting Using Max Heap Using Min Heap Using Quick Select Using Binary Search Tree Using ...
Read MoreWhat is a ClassCastException and when it will be thrown in Java?
In this article, we will be learning about ClassCastException in Java. But before we jump into this, we'll understand what an exception is in Java. After that, we'll learn why and when ClassCastException occurs, look at real-world code examples that throw this exception, and finally learn how to avoid or resolve it. What is an Exception in Java? An exception in Java is an event that disrupts the normal flow of the program. Java provides a way to handle these errors gracefully using try-catch blocks. There are 2 types of exceptions: Checked Exceptions – ...
Read MoreHow to display the different font items inside a JComboBox in Java?
In this article, we will learn to display the different font items inside a JComboBox in Java. The Swing framework provides a powerful JComboBox component that allows users to select an object from a drop-down list. What is a JComboBox? A JComboBox is a subclass of the JComponent class, and it is a combination of a text field and a drop-down list from which the user can choose a value. A JComboBox can generate an ActionListener, ChangeListener, and ItemListener interfaces when the user interacts with a combo box. Syntax The following is the syntax: JComboBox Box_Name = new JComboBox(array); Problem ...
Read MoreCase-insensitive string comparison in C++
To compare two strings in C++, we can use various inbuilt functions and approaches that are already discussed in the previous sections. However, there are some cases where we need to compare two strings case-insensitively, meaning that we need to ignore the case of the characters in the strings while comparing them. In this article, we will focus on learning how to compare two strings case-insensitively in C++. Here is a list of approaches for case-insensitively string comparison, which we will be discussing in this article with stepwise explanation and complete example codes. ...
Read MoreDifference between Iterator and Enumeration in Java
Iterator and Enumeration are both cursors to traverse and access elements from the collection. They both belong to the collection framework. Enumeration was added in JDK1.0 and Iterator in JDK 1.2 version in the collection framework. Java Enumeration Enumeration: An enumeration is a special "class" that indicates a collection of constants. Enumeration can’t make structural changes in the collection because it has read-only access to its elements. It has the following methods − hasMoreElements(): The hasMoreElements() method checks to see if more elements exist in the underlying collection class nextElement(): The ...
Read MorenDifference between Save and SaveAndFlush in Spring Java
Save and SaveAndFlush both can be used for saving entities. They both are both belong to the Spring data library. Save may or may not write your changes to the DB straight away. When we call saveAndFlush system is enforcing the synchronization of your model state with the DB. What is the save method? The save method is used to store an entity in the database. It adds the entity to the transactional buffer, and when the transaction is committed, the data is saved. It then returns the stored entity. Example The following is an example of the save method ...
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