Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Create new instance of a Two-Dimensional array with Java Reflection Method
A new instance of a two dimensional array can be created using the java.lang.reflect.Array.newInstance() method. This method basically creates the two-dimensional array with the required component type as well as length.
A program that demonstrates the creation of a two-dimensional array using the Array.newInstance() method is given as follows −
Example
import java.lang.reflect.Array;
public class Demo {
public static void main (String args[]) {
int size[] = {3, 3};
int arr[][] = (int[][])Array.newInstance(int.class, size);
System.out.println("The two-dimensional array is:");
for(int[] i: arr) {
for(int j: i ) {
System.out.print(j + " ");
}
System.out.println();
}
}
}Output
The two-dimensional array is: 0 0 0 0 0 0 0 0 0
Now let us understand the above program. A new instance of a two-dimensional array is created using the Array.newInstance() method. A code snippet which demonstrates this is as follows −
int size[] = {3, 3};
int arr[][] = (int[][])Array.newInstance(int.class, size);Then the array elements are displayed using the nested for loop. A code snippet which demonstrates this is as follows −
System.out.println("The two-dimensional array is:");
for(int[] i: arr) {
for(int j: i ) {
System.out.print(j + " ");
}
System.out.println();
}
Updated on: 25-Jun-2020
730 Views
Advertisements