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- package com.javarush.task.task23.task2303;
- /*
- Запрети создание экземпляров класса
- */
- public class Solution {
- public abstract static class Listener {
- public void onMouseDown(int x, int y) {
- //do something on mouse down event
- }
- public void onMouseUp(int x, int y) {
- //do something on mouse up event
- }
- }
- public static void main(String[] args) {
- }
- }
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