Like this: String[][] arrays = { array1, array2, array3, array4, array5 }; or String[][] arrays = new String[][] { array1, array2, array3, array4, array5 }; (The latter syntax can be used in assignments other than at the point of the variable declaration, whereas the shorter syntax only works with declarations.)
I have to ask a question in return: is your GenSet “checked” or “unchecked”? What does that mean? Checked: strong typing. GenSet knows explicitly what type of objects it contains (i.e. its constructor was explicitly called with a Class<E> argument, and methods will throw an exception when they are passed arguments that are not of type E. See Collections.checkedCollection.-> in that case, you should … Read more
There’s Arrays.fill(myArray, null); Not that it does anything different than you’d do on your own (it just loops through every element and sets it to null). It’s not native in that it’s pure Java code that performs this, but it is a library function if maybe that’s what you meant. This of course doesn’t allow you to resize the … Read more
Java, Simplified check if int array contains int
You can’t create arrays with a generic component type. Create an array of an explicit type, like Object[], instead. You can then cast this to PCB[] if you want, but I don’t recommend it in most cases. PCB[] res = (PCB[]) new Object[list.size()]; /* Not type-safe. */ If you want type safety, use a collection like java.util.List<PCB> instead of an … Read more
Add String Array to ArrayList
Well if you’re happy printing it in decimal, you could just make it positive by masking: int positive = bytes[i] & 0xff; If you’re printing out a hash though, it would be more conventional to use hex. There are plenty of other questions on Stack Overflow addressing converting binary data to a hex string in … Read more
You could use this to sort all kind of Objects sort(T[] a, Comparator<? super T> c) Arrays.sort(a, Collections.reverseOrder()); Arrays.sort() cannot be used directly to sort primitive arrays in descending order. If you try to call the Arrays.sort() method by passing reverse Comparator defined by Collections.reverseOrder() , it will throw the error no suitable method found for sort(int[],comparator) That will work … Read more
Stored as strings: public class ReadTemps { public static void main(String[] args) throws IOException { // TODO code application logic here // // read KeyWestTemp.txt // create token1 String token1 = “”; // for-each loop for calculating heat index of May – October // create Scanner inFile1 Scanner inFile1 = new Scanner(new File(“KeyWestTemp.txt”)).useDelimiter(“,\\s*”); // Original … Read more
First off: while (board[row][column] == ‘X’ || board[row][column] == ‘O’) { System.out.println(“This spot is occupied. Please try again”); } This will create a infinite loop because row and column shouldn’t change you should ask for new input! Also public static Boolean winner(char[][] board){ for (int i = 0; i< board.length; i++) { for (int j = 0; j < … Read more
