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Programming Articles
Page 985 of 2544
What are the differences between JRadioButton and JCheckBox in Java?
Both JRadioButton and JCheckBox components can extend the JToggleButton class in Java, the main difference is that JRadioButton is a group of buttons in which only one button can be selected at a time, whereas JCheckBox is a group of checkboxes in which multiple items can be selected at a time. JRadioButton A JRadioButton is a component that represents an item with a state selected or unselected. Usually, a group of radio buttons is created to provide options to the user, but only one option can be selected at a time. JRadioButton will generate an ActionListener, ChangeListener, and ItemListener interfaces. Instantiating JRadioButton: JRadioButton Radio_Name = new JRadioButton(); ...
Read MoreHow can we create a login form in Java?\\n
We can develop a login form in Java using Java Swing technology. In this example, we can create two labels username and password, two text fields for the user to enter valid credentials, and finally, one submit button. Once the user is able to enter the valid credentials in the two text fields, we can able to see Hello admin in the login form. Setting Up the Project We’ll use Java Swing, a GUI toolkit for building desktop applications. Required Libraries are: javax.swing.* (for Swing components) java.awt.* (for layout management) ...
Read MoreCan we change the order of public static void main() to static public void main() in Java?
Yes, we can change the order of public static void main() to static public void main() in Java, the compiler doesn't throw any compile-time error or runtime error. In Java, we can declare access modifiers in any order, the method name comes last, the return type comes second to last and then after it's our choice. But it's recommended to put access modifier (public, private and protected) at the forefront as per Java coding standards. Java Method Modifiers and Their Order Java allows you to place method modifiers (the keyword "public, " "static, " "final, " etc.) in various orders. The Java ...
Read MoreHow to convert hex string into int in Python?
A Hexadecimal is the base-16 number system that uses the digits from the '0 to 9' and letters from 'A to F'. It is commonly used in the computers to represent the binary data in the readable format. In this article we are going to learn about converting hex string into int. For example, if we receive the input as a hex string("12xf2") and need to convert it into a integer. For achieving this, Python provides the multiple methods let's explore them one by one. Using Python int() Function The Python int() function is used to convert ...
Read MoreHow to get a variable name as a string in Python?
In Python Variables are just the labels that are pointing to the values. They don't carry any built-in metadata about their names. That’s why there is no direct built-in method to get the variable name as a string. However, we can achieve this, by inspecting the environment such as using the globals(), locals(), or the inspect module. Let's dive into the article to learn more about getting a variable name as a string. Using Python globals() Function The Python globals() function is used to return a dictionary representing the current global symbol table. It provides ...
Read MoreHow to get a function name as a string in Python?
In Python, Functions are the first-class object, which means they can be passed around and manipulated like other data types (like integers, strings). This allows to inspect and retrieve the attribute of functions, including their names. In this article we are going to learn about getting the function names as string, To achieve we are going to use the built-in __name__ attribute. Let's dive into the article to learn more about it. Using Python Class __name__ Attribute The Python __name__ attribute is a special built-in variable that helps to determine the context in a which a Python ...
Read MoreHow can we change the id of an immutable string in Python?
In Python, strings are immutable, which means once the string is created, it cannot be changed. Because of this immutability, any operation that tries to modify the string results in creating a new string object with a different identity. Every object in Python has a unique identity, which can be accessed by using the built-in id() function. In this article, we are going to learn about changing the id of an immutable string in Python. We cannot directly change the ID of the immutable string, but by reassigning or modifying it, we can create a new string and ...
Read MoreWhat are the key steps in read/write from/to a URL connection in java?
The URL class in the java.net package represents a web address or URL (Uniform Resource Locator), which points to a web resource such as a file, page, or directory in the World Wide Web (internet). The URL class provides various constructors, one of which accepts a String parameter (representing a URL) and constructs an object of the URL class. Reading From a URL You can read content from a URL using the openStream() method. This method opens a connection to the web address specified by the current URL object and gives you an InputStream object. The Java InputStream is an ...
Read Morelargest string formed by choosing words from a given Sentence as per given Pattern
To find the largest string formed by choosing words from a given sentence, a user should know about the lexicographically largest string. A lexicographically largest string is a string, when sorted alphabetically, it would appear at the last if we form all possible strings from the selected words. For example: {lion, zebra, apple} will be lexicographically sorted as {apple, lion, zebra}. In this article, we have been given a string and a pattern. Based on this pattern, we have to find the lexicographically largest string matching the given pattern by choosing words from the sentence using C. Here is an ...
Read MoreJava program to find Largest, Smallest, Second Largest, Second Smallest in an array
In this problem we are given an array of numbers, and we have to find the largest, smallest, second largest, and second smallest elements in an array in Java. Let’s understand the problem better with the help of an example: Input int arr[] = {55, 10, 8, 90, 43, 87, 95, 25, 50, 12}; Output Smallest element = 8 2nd Smallest element = 10 Largest element = 95 2nd Largest element = 90 To solve this problem, use the following approaches: Using Arrays.sort() Using nested for-loops Optimized one-pass approach Using Arrays.sort() In this ...
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