Is there a way in Java to call methods from an array? I want to design a primitive board game and I would like to use an array of methods to represent the game spaces.
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you call methods on an array, you pass the board cell to the method.AlexWien– AlexWien2013-02-02 03:58:48 +00:00Commented Feb 2, 2013 at 3:58
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2 Answers
perhaps you need to use some sort of Command pattern, like
class Board {
Cell[][] cells = new Cell[5][5];
void addCell(int i, int j, Cell cell) {
cells[i,j] = cell;
}
void executeCell(int i, int j) {
cells[i,j].execute(this);
}
}
interface Cell {
void execute(Board board);
}
class CellImpl implements Cell {
void execute(Board board) {
// do your stuff here
}
}
you may add as much implementations as you wish, as soon as they implement Cell interface - board can execute them.
Comments
This is the basic idea (Command pattern)
static Runnable[] methods = new Runnable[10];
public static void main(String[] args) throws Exception {
methods[0] = new Runnable() {
@Override
public void run() {
System.out.println("method-0");
}
};
methods[1] = new Runnable() {
@Override
public void run() {
System.out.println("method-1");
}
};
...
methods[1].run();
}
output
method-1
or with reflection
static Method[] methods = new Method[10];
public static void method1() {
System.out.println("method-1");
}
public static void method2() {
System.out.println("method-2");
}
public static void main(String[] args) throws Exception {
methods[0] = Test1.class.getDeclaredMethod("method1");
methods[1] = Test1.class.getDeclaredMethod("method2");
methods[1].invoke(null);
}
