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Java Program to Convert Array into Collection
In this article, we will understand how to convert array into collection. The Collection is a framework that provides architecture to store and manipulate the group of objects. Java Collections can achieve all the operations that you perform on a data such as searching, sorting, insertion, manipulation, and deletion.
Below is a demonstration of the same −
Suppose our input is −
Input array: [Java, Python, Scala, Shell]
The desired output would be −
After elements after converting the array to a list are: [Java, Python, Scala, Shell]
Algorithm
Step 1 - START Step 2 - Declare a string array namely input_array and a list namely result_list. Step 3 - Define the values. Step 4 - Convert the string array to a collection by assigning Arrays.asList(input_array) to the result list. Step 5 - Display the result. Step 6 - Stop
Example 1
Here, we bind all the operations together under the ‘main’ function.
import java.util.*;
public class Demo {
public static void main(String args[]){
String input_array[] = { "Java", "Python", "Scala", "Shell" };
System.out.println("The array is defined as: " + Arrays.toString(input_array));
List result_list = Arrays.asList(input_array);
System.out.println("\nAfter elements after converting the array to a list are: " + result_list);
}
}Output
The array is defined as: [Java, Python, Scala, Shell] After elements after converting the array to a list are: [Java, Python, Scala, Shell]
Example 2
Here, we encapsulate the operations into functions exhibiting object oriented programming.
import java.util.*;
public class Demo {
static void convert_to_list(String input_array[]){
List result_list = Arrays.asList(input_array);
System.out.println("\nAfter elements after converting the array to a list are: " + result_list);
}
public static void main(String args[]){
String input_array[] = { "Java", "Python", "Scala", "Shell" };
System.out.println("The array is defined as: " + Arrays.toString(input_array));
convert_to_list(input_array);
}
}Output
The array is defined as: [Java, Python, Scala, Shell] After elements after converting the array to a list are: [Java, Python, Scala, Shell]
Updated on: 19-Jan-2024
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