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Java DateTime, Calendar Exercises: Get seconds since 1970

Java DateTime, Calendar: Exercise-37 with Solution

Write a Java program to get seconds since 1970.

Sample Solution:

Java Code:

public class Exercise37 {
  public static void main(String[] args)
   {
     long seconds = System.currentTimeMillis() / 1000l;
     System.out.println("\nSeconds since 1970: "+seconds+"\n");
   }
}

Sample Output:

Seconds since 1970: 1498036900

N.B.: The value may be changed accroding to your system date and time.

Pictorial Presentation:

Java Exercises: Java DateTime, Calendar Exercises - Get seconds since 1970

Flowchart:

Flowchart: Java DateTime, Calendar Exercises - Get seconds since 1970

Java Code Editor:

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Java: Tips of the Day

How to sort an ArrayList?

Collections.sort(testList);
Collections.reverse(testList);

That will do what you want. Remember to import Collections though!

Ref: https://bit.ly/32urdSe