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This is a special method called a constructor. The constructor is called only once, at the moment that the object is created. Although this make look similar to how you declare and assign an integer or another primitive type, actually there is java 7 tutorial for beginners lot more going on here.

But we will talk more about that in the Objects section below. The next part shows how you can concatenate strings, in this case an exclamation point is added to the end of the string.

Java Tutorial for Beginners - Here is how to learn Java

Since String is an object it can have methods. In this case the first 5 characters. The last part of the program demonstrates the String. The output from the java 7 tutorial for beginners will be: Hello, World Hello, World!

Loops If there is one thing a computer is good at, it is doing repetitive tasks. To perform a repetitive task in a programming language you use a construct called a loop — something that loops around again and again.

Java Tutorial for Beginners: Learn in 7 Days

Java has three types of simple loop: Each loop type follows the same basic idea, you need to repeat something over and over again until a certain condition is met. Here is an example java 7 tutorial for beginners shows how to print out the numbers 1 to 10, 11 to 20, and 21 to 30, using the three different types of loop: The for loop as three parts.

In the example above the initialization is used to declare an integer i and set its value to 1. This expression will be tested every time the loop executes.


If the result of the test is true then the loop will go around again. In this example the test is to check that i is still less than or equal to After each iteration the third section, the iterator, will be java 7 tutorial for beginners.

In this example it increases the value of i by one.


The iterator also needs to be coded separately. A do… while loop is very similar to a while loop with one big difference, the test to java 7 tutorial for beginners if the loop should continue is at the end of the loop and not at the start.

Like the while loop, the initialization needs to happen outside the loop, in this case: When x goes over 30 the loop will stop. Objects As I mentioned before in this Java tutorial for beginners, Java is what is known as an object-orientated OO programming language and to really learn Java programming and Android programming it is important to understand OO concepts.

Java tutorial for beginners

At its simplest level an object is a set of methods functions that work on a data set. The data and the methods belong to the object, and work for the object. CounterIncrementand GetCount. They include hundreds of java 7 tutorial for beginners, working examples, and dozens of lessons.

Groups of related lessons are organized into "trails". To buy this book, refer to the box to the right.

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