Exception Handling in JAVA

In this tutorial you will learn: 1) What is exception in JAVA? 2) What is throw block? 3) What is try and catch block? What is exception in JAVA? Exception is some unusual event that may happen in the program which also requires special attention of the programmer. Dealing with the exceptions require a lot of overhead processing. Not every error has to be indicated by an exception. Exception separates the code that deal with the exception from the code which is executed during normal running of the program.

ArrayList(dynamic array) in JAVA

In this tutorial you will learn 1) What is an ArrayList? 2) Why we use ArrayList? 3) How we use ArrayList? What is an ArrayList? ArrayList is a data structure. The ArrayList is java class that is extended from AbstractList class. It is actually an array but the property that makes it different from the ordinary array is that its size can be changed dynamically. The ordinary array’s size in unchangeable once defined.

2D arrays in JAVA

In this part of tutorial you will learn 1) What is a 2D array? 2) Why we use 2D arrays? 3) How we use 2D arrays in java programming? What is a 2D array? One dimensional array is a linear array, while the two dimensional array is such an array which has the rows as well as columns. The 2 dimensional is an array within an array so the each entry is divided further allowing us more entries to be included. It is a nonlinear array which is has a vertical length and horizontal length as well. Why we use 2D arrays?

Loops in JAVA

In this tutorial you will learn: 1) Why do we need loops in JAVA? 2) For loop in JAVA 3) While loop in JAVA 4) Do while loop in JAVA 5) Continue and Break Statement in JAVA Why do we need loops? Loops allows you to execute a statement or block of statements repeatedly. For loop is used when the number of iterations are already known. The for loops keep executing until the specific condition is met and when the certain condition is met the execution terminates.

Access Specifiers, Attributes and Methods in JAVA

In this part of the tutorial you will learn. 1) What are the Access Specifiers in JAVA and how we use them? 2) What are the attributes in JAVA and how we use them? 3) What are the Methods in JAVA and their use? What are the Access Specifiers in JAVA and their use? The access to the contents of the class’s attribute and the methods is determined by the access specifiers.

1D array in JAVA

In this tutorial you will learn 1) What is array in JAVA? 2) Why we use arrays? 3) How we use arrays in JAVA coding? What is an Array? Array is a data structure used in programming languages to store similar type of items. Arrays are the simplest data structure. The contents of array can be quickly accessed and can easily be deleted. Arrays are used to put in independent variables of the same type in them. Array is just like a one directional block having equal sized partitions and each block we have a value stored.

Structure of a Method in JAVA

In this tutorial you will learn 1. Basic structure of a method 2. Input into methods 3. Output from methods 4. How Methods are used in JAVA program Basic structure of a method The function in C programming are referred to as Methods in JAVA. They are the set of instruction which are clustered together to perform some specific operation to the input they are given and then the data is returned back to the main of the program or to the Method in which they arr called.