JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: How to check if the date is after the specified date?


Code:
package com.java2novice.date;

import java.util.Date;

public class MyAfterDateTest {
	
	public static void main(String a[]){
		
		Date current = new Date();
		//create a date one day after current date
		long nextDay = System.currentTimeMillis() + 1000*60*60*24;
		//create date object
		Date next = new Date(nextDay);
		//compare both dates
		if(next.after(current)){
			System.out.println("The date is future day");
		} else {
			System.out.println("The date is older than current day");
		}
	}
}

Output:
The date is future day
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  4. How to check if the date is after the specified date?
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Knowledge Centre
What is abstract class or abstract method?
We cannot create instance for an abstract class. We can able to create instance for its subclass only. By specifying abstract keyword just before class, we can make a class as abstract class.

public abstract class MyAbstractClass{

}

Abstract class may or may not contains abstract methods. Abstract method is just method signature, it does not containes any implementation. Its subclass must provide implementation for abstract methods. Abstract methods are looks like as given below:

public abstract int getLength();

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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