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In this article, we will explore different methods to find the season name from the month number in Java. When the user inputs the month number, the output should be the season by the name associated with the month. If the user enters 1 as the month number, the month is January, so the output will be Winter. Given below is the season classification by months Winter: December (12), January (1), February (2) Spring: March (3), April (4), May (5) Summer: June (6), July (7), August (8) Autumn: September (9), October (10), November (11) We can achieve this using several ... Read More
In this article, we will learn about Giuga Numbers and how to write a code to check if a number is a Giuga Number or not in Java. A Giuga number is a composite number N such that for each prime factor p of N, (N/p)-1 is divisible by p. The first Giuga numbers are 30, 858, 1722, 66198, 2214408306, 24423128562, and 432749205173838. Example Lets take N=30. 30 is a composite number, and its prime factors are 2, 3, and 5. ● For p=2: (N/p)-1 to be divisible by p. N is 30, and p here is 2. (30/2)-1=14, ... Read More
The duodecimal number system is also known as the base-12 number system. The decimal system (base-12) uses digits 0-9, while the duodecimal system uses digits 0-9 along with two additional symbols, A and B. In duodecimal, 10 represents 12 , which means 12 in the decimal number system is 10 in the duodecimal system. We often encounter duodecimal in daily life; for example, we have 12 months in a year, 12 zodiac signs, 12 inches in a foot, 12 musical notes in an octave, and we call a group of 12 items a dozen. Representation of duodecimal numbers The duodecimal ... Read More
JDK (Java Development Kit) is a software development kit that contains all the necessary tools and components that are essential to develop a Java application. Whereas BlueJ is an IDE that will make the process of developing a Java application a lot easier. BlueJ requires JDK installed on the system to work with Java applications. Java Development Kit (JDK) The Java Development Kit (JDK) contains all the essential libraries, tools, and all other important things to work with Java. You can’t do programming in Java without JDK. The modern IDEs, like "IntelliJ IDEA" will already be equipped with Java essential ... Read More
In this article, we will learn how to check if two given words are present in a string. This is useful when you need to check for multiple words in the text for different purposes, like searching, filtering, or text analysis. We will explore different approaches on how to implement it in Java, starting from the simple method to more advanced techniques. Example Scenario Consider this string: "Java provides powerful libraries for developers." We want to check if both "java" and "libraries" appear in the text. In this case, the output will be true. 1.Using contains() The contains() method checks ... Read More
Python supports a feature known as multiple inheritance, where a class (child class) can inherit attributes and methods from more than one parent class. This allows for a flexible and powerful way to design class hierarchies. To manage this, Python provides the super() function, which facilitates the calling of methods from a parent class without explicitly naming it. Understanding Multiple Inheritance In multiple inheritance, a child class can derive attributes and methods from multiple parent classes. This can be particularly useful in scenarios where you want to compose behavior from different sources. Example In the following example, the Child class ... Read More
In Java Inheritance is a fundamental feature that allows a class to derive properties and behaviors from another class. In Java, not all classes can be subclassed. A final class is a special type of class that cannot be extended. What is a Final Class in Java? In Java, a class is declared final using the final keyword. The final modifier for finalizing the implementations of classes, methods, and variables. When a class is marked as final, it means − It cannot be extended. All its methods remain unchanged in their ... Read More
In Java, local variables are those that have been declared within a method, constructor, and block, and are only accessible within that defined scope. Such local variables are used when there is a need to store temporary data during the execution of a program. What is a Local Variable? Local variables are declared in methods, constructors, or blocks. Local variables are created when the method, constructor, or block is entered and the variable will be destroyed once it exits the method, constructor, or block. A local variable is a variable that is − Declared inside ... Read More
In this article, we will learn the ResultSetMetaData getScale() method in Java. The ResultSetMetaData interface provides metadata about the columns in a ResultSet object. The getScale() method returns the number of digits to the right of the decimal point for a specified column. What is the getScale() method? The getScale() method of the ResultSetMetaData (interface) retrieves the number of digits after the right of the decimal point in the given column. This method accepts an integer value representing the index of a column. and returns an integer value representing the number of digits after the decimal in the specified column. Syntax ... Read More
In this article, we will learn about the DatabaseMetaData getDriverName() method in Java. The DatabaseMetaData interface provides useful methods to obtain details about the database and the JDBC driver. One such method is getDriverName(), which returns the name of the JDBC driver being used. What is getDriverName() in Java? The getDriverName() method belongs to the DatabaseMetaData interface in Java's JDBC API. It retrieves the name of the JDBC driver currently connected to the database. Syntax String driver_name = metaData.getDriverName(); The method returns the following values − Returns a String representing the name of the ... Read More