In Java Tutorials, we will learn every concept of Java. First of all, let us discuss what Java is? Then we will move to How to learn Java?
- 1 What is Java?
- 2 How to Learn Java in Java Tutorials?
- 3 Basic concepts of Java:
- 3.1 “Hello World” in Java Programming:
- 3.2 Datatype in Java:
- 3.3 Operators in Java:
- 3.4 Variables in Java with types and use:
- 3.5 Decision Making in Java program:
- 3.6 Switch Statement in Java:
- 3.7 While and Do While Loop in Java:
- 3.8 For loop and for-each loop:
- 3.9 Java String with methods:
- 3.10 Array in Java:
- 3.11 Taking User input in Java:
- 3.12 Learn Java Methods:
- 3.13 Exception Handling in Java:
- 3.14 Inner Class in Java:
- 3.15 File Handling in Java:
- 3.16 Regular Expression in Java:
- 3.17 Input-Output class in Java:
- 4 Object Oriented Java tutorial:
- 5 Tutorial of Advance Java:
What is Java?
Java is a Programming language originally developed by Sun MicroSystems in 1995. As the term “Programming language” comes, there rises a question why should we learn Java. There are numbers of programming languages in the world So why Java?
Well, answer to the question is because,
Java has following features:
Learning Java is very simple. If we have an understanding of basic concepts of Object -Oriented programming learning Java will be easier.
Compare to languages such as C and C++ Java is dynamic as it carries more amount of run time information. This information helps the java to verify and resolve the access to objects at run-time.
- Platform Independent:
One of the important features of Java is Platform Independent. When we write a program, we do not have to think about the compatibility of the java program with OS. In simple terms, a program written in Java on Windows will run on Linux, Mac, and Unix.
The main reason for this Feature is JVM i.e. Java Virtual Machine.
- Object – Oriented:
Java is a fully object oriented programming language. Each and everything in Java is an Object. The Object model of Java is simple and an easy to extend.
Java is strictly typed language; It checks our code at the compile time as well as run time. Thus it helps to manage and minimize our errors in coding.
- Architecture Neutral:
The goal of Java is “write once run anywhere, anytime, forever.” Architecture Neutral provides this feature because it creates neutral object file format which we can execute on any hardware.
- High Performance:
Java provides high performance with the help of Java just-in-compiler.
We can run a java program over the distributed environment of the internet because it can handle various protocols of the network.
A Java program has a capability of multi tasking. In other words, we can create a program in Java which can perform more than one task simultaneously.
How to Learn Java in Java Tutorials?
After covering the features of Java, let us move to how to learn Java. In T4tuorial we provide the best Java tutorials. We will cover every concept of Java. We have three sections of Java Tutorial:
- Basic concepts of Java:
Learning of Java cannot start without the basics of Java. In this part, we will cover topics such as variables, control statement, looping, inner class and much more.
2. Object Oriented Java:
As we know, Java is a complete object oriented. So in this section, we will include topics such as inheritance, polymorphism, encapsulation and much more
3. Advance Java:
In Java tutorials, this part deals with the unique feature of Java such as networking, applets, the data structure in Java.
Basic concepts of Java:
Before we start to learn any new programming language, the first step should be to clear the basics. In this section, we provide java tutorial for beginners. Here we discuss the various topics of java programming with examples.
Java tutorial for beginners covers following topics:
This topic is just an introduction to Java. It gives an introduction to how to write a java code. What Editors are available for coding in Java. You can also get the download link for the editors. Not only that but also how to run the java code with examples.
Java is a strongly typed language. Datatypes in Java helps us to work with various data like integer, character, string, etc. In our Java tutorial, we will discuss we will see what different datatypes are available? And how to use them with examples.
Operators in Java are symbols which have some meanings. We can use them in our programs to perform some basic operations. We will discuss various operators in Java and how to use them in the program as required with examples.
Here we will see what is variable in Java. What different types of variable are available in Java. How to use the variable in Java. This section contains an example of codes for each type. It covers topics such as the instance variable, local variable, and a static variable. Every Java programmer should know about the variables in Java
In every programming language comes a part of Decision making. Here as well we have the section of condition statement. We have topics such if…else and also if…else..if. Both the statements are handy in any programming language.
We have covered topics with descriptions, syntax, example, and output. The article will give you a clear idea about the condition statement.
Switch Statement in Java is an another manner for Decision making. Assume there are large numbers of the if…else statement. So if we use the if…else ladder, it will be a big block. Managing the code is complicated. The performance of the code also reduces. But there is a solution to this problem in the Java programming language.
In such condition switch statement becomes useful. In our Java tutorial, we have explained the switch statement with syntax and example.
Looping statement is the methods of programming language which helps to repeat a set of statement number of times. Java too supports looping statements such as While and Do While Loop. Learn Java looping statement with syntax and examples.
In our post, you will find not only the detail description for each looping statements but also good examples to understand the concepts better. You will also learn the difference between the while loop and Do while Loop.
For loop is another statement of looping in Java for repeating a set of statement number of times. Java supports two different type of for loop, and they are for loop and for-each loop. In our post, we have detail description of the each loop. There is a syntax for both the loops with the description.
We have also added examples of both loops with output and explanation of the code. The difference between for and for each loop is also available. After reading the post, you will be clear on both loops.
In Java String is a set of characters is known a String, or we can also say that a string is an array of characters which we use to store a word or sentences. We can use Java String to store name and there different methods available to work with and manipulate the string.
The topic of string in our post with is explained with syntax and examples. We have not only covered about string but also various method available in String class to work with String data.
An array in Java stores multiple values in the same category for easy access and maintenance of data in memory and can be obtained as and when required. In our post, we have topics such as how to declare an array, assigning the value to the array and accessing the value from the array.
We also have topics such as different types of the array such as single dimension array, multi – dimension array. Each of the types of an array is well covered with syntax and examples. We have also talked about how to create a Dynamic single and multi-dimension array in Java.
When we are learning in Java how could we miss on taking input from the user? This concept helps better to provide a dynamic program to the user. Our program will work on the data given by the user.
We have a scanner class which we can use to create an object to access the method of the class. We have discussed it in our post with simple examples with explanation.
Java methods are the set of statements which are written to perform some operations. In Java, we have two different type of functions Inbuilt Java Functions and User-defined functions.
In our Java tutorials, we have explained about Java built-in methods with examples. We have also covered about how we can define our functions in Java. Topics such as methods returning a value, constructors in Java are also available with syntax, examples, and explanation.
When we are learning Java methods how could we forget Method overloading? We explain method overloading in our tutorial with simple syntax and examples.
In Java Exception is an object that handles an exceptional or unusual condition that occurs in a Java program. To implement the exception handling in Java, we have to use the try catch block. You will get detail description about try catch block.
Not only try-catch block but also we will study multiple try catch block with examples. A try -catch block in Java is made up of various parts. Throw block. Finally, a block is also covered in our Java tutorials with syntax, examples, and explanation.
In simple terms, Inner class in Java means, having a class within a class. In Java, we create a class inside another class just like a method, or variable. Learn about inner class with simple syntax and examples with detail description.
Our article on Inner class in Java includes topics such as types of Inner class i.e. static Inner class and non-static Inner class. Java has three different non-static class they are Member Inner Class, Local Inner Class, Anonymous inner class.
We have discussed them in detail with their syntax, examples and simple explanation.
In java, we can work with files of the machines. Working with file means we can read data from a file, as well as we can write data to the file.
In our Java tutorials, we have discussed the file class in Java which has various method and constructors. This method helps us to read and write into a file. We have given examples of how to use these methods.
Not only this method but also we have provided topics such as FileInputStream and FileOutputStream with simple syntax, examples, and output.
In Java, we can use java.util.Regex package for regular expression processing. This package has two important classes that we will use for pattern matching. One is Pattern class to define a regular expression, and the other is Matcher class to match a pattern against a string.
In this article, we have topics such as Pattern class in Java, Matcher class in Java, Character Class, quantifiers for pattern matching, and meta characters for Regular expression. You will also get to know about the method in the matcher class. There are simple examples, codes, and explanation to clear your concepts.
This article provides you information regarding basic input output operation in Java program. You will learn various Java methods for IO operations. We have Java IO Package. This package is a collection of classes which contains methods to perform methods for input and output operations.
We will discuss on InputStream class, OutputStream class, and Standard Streams in Java with their methods and example. We will cover methods of each class and examples for each class. You will get a simple explanation on the topics.
Object Oriented Java tutorial:
Once you complete the Java tutorial for the basic concepts of java. Now turns comes for Object Oriented concepts of Java. Java is an object oriented programming language. It supports most of the features of object-oriented programming.
In our Java tutorials, we will try to cover every aspect of Java object oriented programming with simple examples and explanation.
Inheritance is one of the important features of any object-oriented programming language. It provides reusability of existing code. In inheritance, we give the property of an existing class to other class.
In our java tutorials, we cover every topic of inheritance in Java. The topic includes different types of inheritance in Java like single inheritance, multiple inheritances, Multilevel inheritance, Hierarchical Inheritance, Multiple Inheritance (using an interface), Hybrid Inheritance (using an interface).
We will also cover the topic of the interface in Java which is useful in inheritance. We will provide basic syntax, simple explanation and examples with the output for each type of inheritance in Java.
Polymorphism is a Greek word which means more than one form. It is a concept of an object oriented programming which enables a variable, method and an object to perform more than one function. Java is object-oriented programming language which supports polymorphism.
Learning Java cannot complete without the topic of polymorphism. We will discuss both types of polymorphism in Java. First, is Compile time polymorphism also known as Method Overloading. Second is Method overriding which is compile time polymorphism in java.
We have syntax and examples for each polymorphism with the explanation.
Encapsulation is one of the fundamental concepts of OOP (Object Oriented Programming). In Java Encapsulation is the mechanism that binds or encapsulates data and code together as a single unit.
In our java tutorial for encapsulation in Java, we will discuss class. We will cover topics including how to create a class, how to create an object of the class. We will also discuss different access protection for the class in Java. There you syntax, explanation, and example for each topic in Encapsulation in Java available in our tutorial.
Abstraction in Java deals with providing functionality to the user for hiding the details of implementation. In simple terms abstraction lets the user know what a program does not how it does.
In our tutorial, we will cover topics of concept in Java such as how to create an abstract class. What is the use of the abstract method in Java? Both are the significant part of abstraction in java. We will discuss each topic by providing the syntax and examples.
In Java, we use packages for namespace management; each programmer can define his namespace and place their class within a namespace. Thus two classes can have the same name, but still, they are in the different namespace.
Java has a rich collection of Built-in packages which we can use in our program. Java also supports use0defined packages.
In our Java tutorial for packages, we will discuss how to create a package as well as how to use it. This tutorial cover topics such as how to declare the package, how to add members to the package, how to use the package in the program. We will discuss the access protection for Java packages.
Tutorial of Advance Java:
The above which we have seen are common in many programming languages. But this section of Java tutorial deals with the special feature of Java. Here we see how to use Java programming in networking. One of the special feature of Java i.e. applets.
We will also discuss how to implement Data structure in Java. There are much more such topics which are available in our advanced- Java tutorial.
Networking in Java refers to network programming to build an application that can run on any device that is connected to the network.In networking in Java, we focus on a socket which is a foundation of a modern computer network. Sockets help multiple computers to connect with each other.
In our Java tutorial for networking learn about IP Address, TCP/IP Sockets, URL, Datagram Packets. For each of them, there are separate class and various methods. We can use them in our program to create an application to run over the network.
An applet in Java is a small application that runs in the web browser to provide an interactive interface. We can use an applet to run complex computation without any risk of virus or data integrity.
In tutorial of the applet of java, we will discuss a topic such as what are the features of applets. The life cycle of an applet, how to create an applet. how to run an applet in the AppletViewer. How to execute the applet in the browser.
We will use the general syntax and program for explaining each topic of the applet in Java tutorials.
Multithreading in Java is a feature that helps to divide a Java program into smaller parts. All these parts of the program can run concurrently and perform a different task. With the help of multithreading, we make an optimal use of resources as well as we can execute our program in less time.
In our Java tutorials for multithreading, we have topics like what is a thread? the life cycle of a thread. Priorities of thread in multi threading. We also discuss the runnable interface to implement multithreading in Java. W also cover Synchronization in multithreading in Java.
We will give you explanation of each topic with syntax, explanation, and examples in multithreading in Java.
The term generics in Java means parameterized types. Whenever we create a class, a method or an interface we specify the type of data. Generics in Java helps us to create a single class or method that will automatically work with different data types. We do not specify the type of data in a generic class or generic method. We use the reference of type Object.
Here we will learn about Java Generic name convention, Generic class in Java, Generic method in Java, and Generic interface in Java. There are simple syntax and example for each topic available in Generic Java tutorials.
Data Structure is a way to arrange data in a computer so that we can use it quickly. We can implement Data structure in Java with the help of Package java.util.*.
In our Java tutorial, we cover topics of data structure like Enumeration, Interface, Vector, Stack, Dictionary, Hashtable, properties. For each of the type, we have different class and methods to manage the Data structure.
We have given example on how to insert data and display the data from the data structure in Java.
Serialization in Java is a process of translating an object into a byte stream. In simple terms, Serialization is a mechanism that turns the state of an object into a particular format. Here the format can be a file or memory buffer.
In our Java tutorial, we will talk about what is Serialization, the class for serialization, methods available in class for serialization, and example for Serialization and Deserialization as well.
Collections Framework in Java consist of classes and interfaces in java.util.* package. With the help of this classes and interface, we can manage groups of Objects. The Collections Framework is very useful for implementing Data Structure in Java.
In our Java tutorials, we will see all the interfaces in the collection interface, classes in the collection interface and the legacy classes in the collections framework in Java.