How can I compare current date and date in Java?

In Java, two dates can be compared using the compareTo() method of Comparable interface. This method returns ‘0’ if both the dates are equal, it returns a value “greater than 0” if date1 is after date2 and it returns a value “less than 0” if date1 is before date2.

How can I compare date string to current date?

You can use compareTo() method of Date….It will return an integer value,

  1. return a value 0 if the argument Date (compareDate) is equal to this Date;
  2. return a value less than 0 if this Date is before the Date argument (compareDate);
  3. return a value greater than 0 if this Date is after the Date argument (compareDate).

How do you check if the date is today’s date in Java?

Get Current Date and Time: java. time. format. DateTimeFormatter

  1. import java.time.format.DateTimeFormatter;
  2. import java.time.LocalDateTime;
  3. public class CurrentDateTimeExample1 {
  4. public static void main(String[] args) {
  5. DateTimeFormatter dtf = DateTimeFormatter.ofPattern(“yyyy/MM/dd HH:mm:ss”);

How do you compare dates to date?

For comparing the two dates, we have used the compareTo() method. If both dates are equal it prints Both dates are equal. If date1 is greater than date2, it prints Date 1 comes after Date 2. If date1 is smaller than date2, it prints Date 1 comes after Date 2.

How do you use compareTo in Java?

Java String compareTo() Method Example

  1. public class CompareToExample{
  2. public static void main(String args[]){
  3. String s1=”hello”;
  4. String s2=”hello”;
  5. String s3=”meklo”;
  6. String s4=”hemlo”;
  7. String s5=”flag”;
  8. System.out.println(s1.compareTo(s2));//0 because both are equal.

How do you check if a date is greater than today in JavaScript?

“check if date greater than another date javascript” Code Answer

  1. var date1 = new Date(‘December 25, 2017 01:30:00’);
  2. var date2 = new Date(‘June 18, 2016 02:30:00’);
  3. ​
  4. //best to use .getTime() to compare dates.
  5. if(date1. getTime() === date2. getTime()){
  6. //same date.
  7. }
  8. ​

How do you compare objects in Java?

In Java, the == operator compares that two references are identical or not. Whereas the equals() method compares two objects. Objects are equal when they have the same state (usually comparing variables). Objects are identical when they share the class identity.

How do you implement the compareTo method?

In order to properly implement the compareTo method, we need to respect the following mathematical rules:

  1. sgn(x. compareTo(y)) == -sgn(y. compareTo(x))
  2. (x. compareTo(y) > 0 && y. compareTo(z) > 0) implies x. compareTo(z) > 0.
  3. x. compareTo(y) == 0 implies that sgn(x. compareTo(z)) == sgn(y. compareTo(z))