package cn;
/**
* 测试单例模式
* @author xiaoming
*
*/
public class TaskManager {
private static TaskManager tm = null;
//因此需要将TaskManager的构造函数可见性改为private
private TaskManager() {
}
public void displayProcesses() {
}
public void displayServices() {
}
public static TaskManager getInstance() {
if (tm == null) {
tm = new TaskManager();
}
return tm;
}
}