Advertisements I want to count how many zeros are at the end of the array using recursions. But I’m having problems with an array with all of it’s elements equal to 0 because it’s giving me the wrong answer. I’ve tried putting the position in the range (0,v.length-1], putting one of the two conditions and… Read More Amount of zeros at the end of an array with recursions
Advertisements I have created total of 14 classes where a1 is my super class and a2,a3,a4,….. are my sub classes. I have initialized int variables in super class and has declared a n9 variable in a2, b1, c1. I want to use a3 subclass to call add5 method which is declared in a5 also I… Read More Can we call methods in different classes while achieving hierarchical inheritance
Advertisements i have a project that i’m working on in my class which asks you to use switch case to use the user’s waist measurement to get their pant size. however, when i start the case in the switch case it gives me the error on line 13. public class MySizes { public static void… Read More Illegal start of type, ";" expected
Advertisements Not able to add multiple elements inside the stack in java collection framework. whenever i print the stack then also the stack is showing the currently added element inside the stack. I am trying to add multiple elements inside the stack so that i can perform all stack related operations. import java.util.*; public class… Read More Not able to push multiple elements inside the stack in java collection framework . When i print the stack only one elements is there
Advertisements public static int[] plusOne(int[] digits) { long n = 0; for(int i = 0; i < digits.length; i++) { n = n*10+digits[i]; } System.out.println(n); n = 0; for(int i : digits) { n = n*10+digits[i]; } System.out.println(n); return digits; } The above code for me prints entirely different numbers for n depending on which… Read More Why don't Java for loops work the same way?
Advertisements I read in OCP 17 book that findAny on serial stream is not guaranteed to return first element and for parallelStream results are likely to be more random. Can I somehow achieve such state in which findAny() on serial stream will return element that is not first? Is it possible to achieve this while… Read More How findAny() selects an element in Java stream?
Advertisements I’m trying to implement the append method in a my DoublyLinkedList class and I’m getting some error related to the toString method public class DoublyLinkedList { private Node head; private Node tail; private int length; static class Node { int value; Node prev; Node next; public Node(int value) { this.value = value; } @Override… Read More Unexpected behavior of the toString method in Java
Advertisements I have this Java code: String payload = "women’s tops.com"; String domainf = payload.replaceAll("\\s+", ""); String domain = domainf.replaceAll("’", ""); I need to get "womenstops.com" How I can do this with one method replaceAll? >Solution : "women’s tops.com".replaceAll("[‘\\s+]", "") will give womenstops.com
Advertisements I’m using Java 11. I have a class that uses the deprecated finalize method, and I want to start using ‘Cleaner’ instead. This is the class I use: public class TempFile2 extends File { private static final Cleaner cleaner = Cleaner.create(); public TempFile2(String pathname) { super(pathname); cleaner.register(this, cleanAction()); } private Runnable cleanAction() { return… Read More Why Java Cleaner is not working in this example?
Advertisements I am implementing an equals method for my class. I want to check if the object passed in is a derived type of the current class so i can return saying they are not equal. I currently have: @Override public boolean equals(Object obj){ if(!(obj instanceof Car)){ return false; } Car car = (Car)obj; return… Read More How to check if the object passed into a method isn't a derived type?