Java Exercises: Check whether a security manager has already been established for the current application or not
Java Basic: Exercise-89 with Solution
Write a Java program to check whether a security manager has already been established for the current application or not.
Sample Solution:
Java Code:
import java.lang.*;
public class Exercise89 {
public static void main(String[] args)
{
System.out.println("System security interface:");
System.out.println(System.getSecurityManager());
}
}
Sample Output:
System security interface: null
Flowchart:

Java Code Editor:
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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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