Shruti Agarwal Basic Leave a comment

How to Get Filename Without Extension in Java

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 = " + fileName);
        else {
            fileName = fileName.substring(0,fileName.lastIndexOf("."));
            System.out.println("File Name = " + fileName);
        }
    }
}

class substring {

public static void main(String[] args) {

String fileName = "myfile.java";

if(!fileName.contains("."))

System.out.println("File Name = " + fileName);

else {

fileName = fileName.substring(0,fileName.lastIndexOf("."));

System.out.println("File Name = " + fileName);

}

Output:

substring

substring

Explanation: We take a file named ‘myfile’ with the extension ‘.java’. Next, we check whether the filename contains ‘.’ or not. If it contains ‘.’, then go to the else part and get filename without an extension using substring() function. This

Shruti Agarwal OOP Leave a comment

Java Global Variables

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 accessible by the object of that class. Therefore, in Java, there is no such precise concept of global variables because these are described at the

Nisha Yadav Basic Leave a comment

Java Control Flow Statements

To plan or decide something before implementation is always essential. This will help execute every step more efficiently, and you have an idea about the action that to be performed next. In computer language, decision-making is an important part. Predominantly, the execution starts from the top to the bottom. But sometimes, the decision is vital to know which block needs to perform next. Control flow in Java will help you to decide the next action. This article gives detailed information

Nisha Yadav Basic Leave a comment

Nested While Loop in Java

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 operation that repeats in a specific sequence until the particular condition or procedure is completed. Loops follow the don’t repeat yourself (DRY) principle for complete

Nisha Yadav Multithreading Leave a comment

Java Race Condition with Example

Sometimes, people detect some error in the program’s compile-time or run time, which mainly occurs due to race condition while executing programs. Are you excited to know more about race condition? This article will give a piece of detailed information on Race conditions in Java. Before proceeding to know about a race condition, let’s focus on threading. This will help you to understand the basics of race conditions. What is a thread, and why is it used? In java circumstances,

Nisha Yadav OOP Leave a comment

4 Pillars of OOPs in Java

As programmers work with real-life entities, object-oriented programming allows programmers to achieve the same. Objects are used to store knowledge, data, task, state, and other different OOP tasks and methods. This article is going to explain the fundamental four pillars of object oriented programming in java. Image Source 1. Encapsulation Encapsulation is achieved when the object of the class maintains the private state. Other objects are not allowed to access these objects; despite that, the other objects can only access

Nisha Yadav OOP Leave a comment

Advantages and Disadvantages of Inheritance in Java

Inheritance is one of the pillars of the Java programming language. Learning OOP (Object Oriented Programming) without knowing and understanding the concept of Inheritance, its pros and cons are incomplete. Inheritance is a process in which a class acquires all the data members and its parent class methods. The basic idea behind it is that you create new classes based on the existing classes with additional data and methods. Example:

class SuperHello {
    .....
    .....
}

class Sub extends SuperHello {
    .....
    .....
}

class SuperHello {

.....

}

class Sub extends SuperHello {

.....

}

In the above example, there are two classes SuperHello

Nisha Yadav Array Leave a comment

Java 3D Array – Three Dimensional Array

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 is introduced, which can store data in a regular format. It is because of the array that operating on data became more accessible. First, get

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