Something like the below may be feasible here: long a = System.nanoTime(); //Do your stuff System.out.println(“Total time taken: ” + System.nanoTime() – a); 2 solved Java : Total downloading time [closed]
Taken from a question here: Adding items to end of linked list class Node { Object data; Node next; Node(Object d,Node n) { data = d ; next = n ; } public static Node addLast(Node header, Object x) { // save the reference to the header so we can return it. Node ret = … Read more
try to separate the coefficients from polynomials and calculate those in separate methods. Example: public class NewClass { public static void main(String[] args) { int greatestExponent = 9; double x = 0.5; System.out.println(calculate(x,greatestExponent)); } public static double getCoefficient(int n){ double coff = 1; for(int i=1; i<n; i++){ if(i%2==0){ coff = coff/i; //if even put it … Read more
You did not override toString and hashValue, so the implementations from Object are used. toString() returns a String consisting of the class name (RefDem) and the memory location in hexadecimal form (1e5e2c3) seperated by “@”. “d :” + d is equivalent to “d :” + d.toString() so you get “d :RefDem@1e5e2c3” The hashCode implementation of … Read more
Declare a BattleShip ship1 = null variable at the top of your method and use it: public static int plantNavy(BattleBoard myBattle, int counter) { BattleShip ship1 = null; Do not re-declare the variable in your if blocks, just assign to it. i.e., do if (counter == 0) { ship1 = new LargeShip(false); } not if … Read more
If you are iterating over the items in some container, just iterate over that container; don’t use the index unless you need to. Right: slots = [1, 2, 3, 7] for slot in slots: print cards[slot] Wrong (or at least “writing C/C++/Java/C#/whatever in Python”): slots = [1, 2, 3, 7] for i in range(len(slots)): print … Read more
Assign Variable, here you have to assign variable to method that is returning same type so… String[] xx = function String[]() In your case: String[] num = numbers(); The method here you have to create array, fill it and return it. Always according to it’s signature so if you declare a function String[] name() you … Read more
As correctly stated in Turing85’s comment, you can actually remove every parenthesis except the outer ones if (weight < 160 && age <= 27 && age >= 22 && height < 72 && !isASmoker && isMale && isGoodLooking && isAbleToRelocate ) this is the minimum number of parethesis you can use. The maximum number is… … Read more
Java supports multiple implementation of interfaces. The proper syntax is: public class A implements B, C{ } 0 solved Implement interfaces in java
You have startsWith method in String class. yourString.startsWith(“not”) 0 solved How to check if a string is present at the beginning of another string in java [duplicate]
Not at all. Java generics are less powerful compared to C++ templates. There is simply no way to express such a template in Java. 15 solved C++ templates to Java Generics [closed]
just make a small modification.i declared a variable int z = 0; each time it print a character increment z by one.because this pattern goes like 0,1 ,2 ,3 ,4 ,++++……. int levels = 4; int z = 0; // this make it easy for (int i = 0; i < levels; i++) { for … Read more
To answer my own question: I implemented the same logic with Jsoup and the time bench mark yielded the results for a fixed amount of data: Selenium: 2 minutes 46 seconds Jsoup: 16 seconds Thus it seems that Selenium is much slower. I cannot give a technical reason why this is so. I can only … Read more
String[] values = input.replaceAll(“^[.,\\s]+”, “”).split(“[.,\\s]+”); Original Source: Split a string with arbitrary number of commas and spaces 3 solved Java Regex to get only words [closed]
C++ and Java have similar syntax but not always means the same. In Java all objects are references, so when you’re doing Classname obj; you’re creating a empty reference to an object, so you need to assign something to it. Classname obj; //here obj is pointing to nothing. obj = new Classname(); //here obj is … Read more