ARRAY

JAVA arrays

An array is a type of variable that can store multiple values. The array is an object in Java that contains similar data type values.

A few main points about arrays in Java:

• Array is a data structure in java that can hold one or more values in a single variable.
• Array in java is a collection of similar type of values.
• Java has two types of arrays – single dimensional and multidimensional arrays.
• Array index starts at 0.

How to declare an array :

This is how an array in java can be declared:

ArrayDataType[] ArrayName;

OR

ArrayDataType ArrayName[];

Where ArrayDataType defines the data type of array element like int, double etc.

ArrayName is the name of array.

You can also create/ Instantiate an array by using new keyword as follows:

In java, initialize an array can be done by using new keyword as well:

int arrayName = new int[10];

As you can see array initialization is done, where [10] specifies that array length is ten or array can contain ten elements.

Assigning values to arrays: 

This is how you can assign value to arrays:

arrayName[0] = 10;

Alternatively you can also assign values as follows:

int[]ArrList = {1, 2, 3, 4,5};

The above array is five elements length.