Java Array Exercises: Convert an array to ArrayList
Java Array: Exercise-20 with Solution
Write a Java program to convert an array to ArrayList.
Pictorial Presentation:

Sample Solution:
Java Code :
import java.util.ArrayList;
import java.util.Arrays;
public class Exercise20 {
public static void main(String[] args)
{
String[] my_array = new String[] {"Python", "JAVA", "PHP", "Perl", "C#", "C++"};
ArrayList<String> list = new ArrayList<String>(Arrays.asList(my_array));
System.out.println(list);
}
}
Sample Output:
[Python, JAVA, PHP, Perl, C#, C++]
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Java: Tips of the Day
countOccurrences
Counts the occurrences of a value in an array.
Use Arrays.stream().filter().count() to count total number of values that equals the specified value.
public static long countOccurrences(int[] numbers, int value) { return Arrays.stream(numbers) .filter(number -> number == value) .count(); }
Ref: https://bit.ly/3kCAgLb
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