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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7.  
  8. class MyManager {
  9.     String name;
  10.     public MyManager(String name) {
  11.         this.name = name;
  12.     }
  13.     void startTask() {
  14.         System.out.println("My name is " + name);
  15.     }
  16. }
  17.  
  18. class MySingleton {
  19.   private MyManager mManager;
  20.   private static MySingleton mInstance;
  21.  
  22.   private MySingleton() {
  23.   }
  24.  
  25.   public static MySingleton getInstance() {
  26.      if (mInstance == null) {
  27.         mInstance = new MySingleton();
  28.      }
  29.      return mInstance;
  30.   }
  31.  
  32.   public MyManager getManagerByName(String name) {
  33.      //I don’t show the GET_MGR function, it is a 3rd party library function
  34.      mManager = GET_MGR(name);
  35.      return mManager;
  36.   }
  37.  
  38.   private MyManager GET_MGR(String name) {
  39.       return new MyManager(name);
  40.   }
  41.  
  42.   public void doTask() {
  43.      mManager.startTask();
  44.   }
  45.  
  46. }
  47.  
  48. public class Main {
  49.  
  50.  
  51.     public static void main(String[] args) {
  52.         MySingleton.getInstance().getManagerByName("aioobe");
  53.         MySingleton.getInstance().doTask();
  54.     }
  55.  
  56. }
Success #stdin #stdout 0.09s 320256KB
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Standard input is empty
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My name is aioobe
https://ideone.com/a7BULg
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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