methods

问题 I am having an issue where each class has multiple objects, it is a mess of objects being created of each class and I am having errors. The 4 class files are Main, Game, Updates Building, I will show the constructors of each class and hopefully someone can help me show how to create multiple objects of one class. There are variables in game that I need to access from update and building but when I try errors are returned. How do I access the variables in game from both update and building

问题 I am trying to write a function, that takes another function as a parameter (and the calls it later) I know that its doable if I know the signature of the function beforehand, but is this possible, if I dont? (like passing a function as a parameter in JavaScript) For example: // this should accept a function with any kind of signature and return value void DelayedCall(?? functionToCallLater, float delayInSecs, params object[] values) { //here do something like (just as an example)

问题 using Ruby on Rails 4, I have a UI where the user can select a video file from a directory path on a server. They then click a button that runs media info on the file and displays the xml for the video along with parsing certain data values from the xml and assigning the value to @variables and displaying it back in the UI html page. This is all done in the action/method 'evaluate media'. When the page loads back it determines if this file has been saved or not and allows the user to save the

问题 I am writing a program that is like a guessing die and card game. It simulates the user rolling a die, and based on what they toll a card is generated that is equivalent to the amount of points they received in that round based. For example, rolling 1 has a card that says the user caught a big fish, and earned 20 points. The problem that I have is incrementing points and keeping a running total. The program only displays the die number rolled, as opposed to how many points were earned that

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . I have a data file that I need to sort the information by Make&&Model of vehicle. My bubblesort doesn't work, can you help me to fix my problem, please ?

问题 I found out that the method paint() gets called some time (it can't happen immediately, can it?) after the activation of init() , not after it finishes. I have a few objects that get created in init() and drawn in the paint() method. But the drawing starts before the objects get initialized. This causes exceptions, that are handled automatically. But it also causes the objects not to get drawn after the the first activation of paint() - they need to be redrawn in order to show up. I was able

问题 I have the following program to write: An interesting (yet unsolved) question in mathematics is called "hailstone numbers". This series is produced by taking an initial integer and if the number is even, dividing it by 2. If the number is odd, multiply it by 3 and add 1. This process is the repeated. For example : An initial number of 10 produces: 10, 5, 16, 8, 4, 2, 1, 4, 2, 1... An initial value of 23 produces: 23, 70, 35, 106, 53, 160, 80, 40, 20, 10, 5, 16, 8, 4, 2, 1, 4, 2, 1... Note

问题 I have 5 different methods like this public void met1(){} public void met2(){} public void met3(){} public void met4(){} public void met5(){} I want to call this method from 1 to 5 is there any convinient way to do this. I don't want to call one by one or I don't want to put method call inside other method. How Can I do this?? 回答1: Have you looked into fluent design patterns? http://www.javacodegeeks.com/2013/01/fluent-object-creation.html Example would be something like this: myObject.met1()

问题 So I keep running into a problem with my code for checking if there is a connect 4 vertically. Preface to my code: the board has 6 rows and 7 columns, the variable player1 holds the value of the character being used as a chip and playerID just holds the value of whoever gets the connect 4. public int verticalWin() { int playerID = 0; for (int x = 0; x < board[x].length; x++) { int count = 1; for (int y = board.length-2; y >= 0; y--) { if (board[y][x] == board[y+1][x]) { count++; if (count ==

问题 I will enhance an old algorithm which use java language and i want it to read the text from file to encrypt it SO I will make a method that reads the text line by line from file then store them in array. I made this method and it works BUT the variable "line2" reads the first line correctly but once the next line come it will erase the first line and put the second line so what can i do please?? // The CODES Private byte[] line2; public byte[] readFromFile (){ try (BufferedReader br = new