Normally, array is a collection of similar type of elements that have contiguous memory location.
Java array is an object the contains elements of similar data type. It is a data structure where we store similar elements. We can store only fixed set of elements in a java array.
Array in java is index based, first element of the array is stored at 0 index.
Advantage of Java Array
Disadvantage of Java Array
Types of Array in java
There are two types of array.
Single Dimensional Array in java
Syntax to Declare an Array in java
Instantiation of an Array in java
Example of single dimensional java array
Let's see the simple example of java array, where we are going to declare, instantiate, initialize and traverse an array.Test it Now
Output: 10 20 70 40 50
Declaration, Instantiation and Initialization of Java Array
We can declare, instantiate and initialize the java array together by:
Let's see the simple example to print this array.Test it Now
Output:33 3 4 5
Passing Array to method in java
We can pass the java array to method so that we can reuse the same logic on any array.
Let's see the simple example to get minimum number of an array using method.Test it Now
Multidimensional array in java
In such case, data is stored in row and column based index (also known as matrix form).
Syntax to Declare Multidimensional Array in java
Example to instantiate Multidimensional Array in java
Example to initialize Multidimensional Array in java
Example of Multidimensional java array
Let's see the simple example to declare, instantiate, initialize and print the 2Dimensional array.Test it Now
Output:1 2 3 2 4 5 4 4 5
What is the class name of java array?
In java, array is an object. For array object, an proxy class is created whose name can be obtained by getClass().getName() method on the object.Test it Now
Copying a java array
We can copy an array to another by the arraycopy method of System class.
Syntax of arraycopy method
Example of arraycopy methodTest it Now
Addition of 2 matrices in java
Let's see a simple example that adds two matrices.Test it Now
Output:2 6 8 6 8 10