When you want to store a student’s list from a class and suppose the class consists of 100 students. By putting the data one by one into a variable will be time taking. While working with those variables and working with variables seems quite complicating and annoying. Therefore to avoid such a situation, an array […]
Java 3D Array – Three Dimensional Array Read More »
To find out whether constructor returns any value or not, let’s learn about a constructor? In simple terms, the constructor is a special method, which is used to initialize an instance of a class. This special method differs from the actual methods of classes. The name of a constructor is always similar to the name
Does Constructor Return Any Value? Read More »
Java is a very popular language and used on 7 billion devices worldwide. It is one of the most secured, platform-independent, and object oriented programming languages that’s why it is necessary to be familiar with the basic structure of Java program. A typical Java program consists of the following sections: Package statements Documentation Section Import
Basic Structure of Java Program with Example Read More »
TreeSet is an implementation class of NavigableSet. In a TreeSet, duplicate as well as heterogenous (values of different data types) values are not allowed. If you’re trying to insert heterogeneous objects then it displays a ClassCastException. If the tree set exists, then we can insert a null value, and if the treeset doesn’t exist then
TreeSet Vs TreeMap in Java Read More »
In this article, we will discuss about nested switch in Java with examples. When a switch statement contains further switch statements inside it, then it is called a nested switch. Inside the nested switch statement, we can give multiple cases and a default case. The inner switch statement must be part of any outer case
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This article will talk about how to get filename without extension in Java language. The file utility method helps you to get rid of the file extension from the file name. Here is an example. Program: class substring { public static void main(String[] args) { String fileName = “myfile.java”; if(!fileName.contains(“.”)) System.out.println(“File Name = ” +
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In this article, we will see what is a global variable and how we can use this in our Java programs. In Java, all the functions and data members are declared inside a class and every declaration has to be done inside it. If we declare them outside the class, then they would not be
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It is pretty impossible to impose hundreds of words or numbers by just writing or putting into variable one by one. Instead, use a loop to avoid extra time. This article gives an overview of nested while loop in Java and how to use them. Why use loops? Loops are the programming structure of an
Nested While Loop in Java Read More »