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  1. class PrintServerEager{
  2.     private static PrintServerEager instance1 = new PrintServerEager();
  3.     private PrintServerEager(){
  4.     }
  5.     public static PrintServerEager getInstance1()
  6.     {
  7.         return instance1;
  8.     }
  9.     void printDocument1(String documentName)
  10.     {
  11.         System.out.println("Name of the document is = "+documentName);
  12.     }
  13. }
  14.  
  15. class PrintServerLazy{
  16.     private static PrintServerLazy instance2;
  17.     private PrintServerLazy(){
  18.     }
  19.     public static PrintServerLazy getInstance2()
  20.     {
  21.         if(instance2 == null)
  22.         {
  23.             instance2 = new PrintServerLazy();
  24.         }
  25.         return instance2;
  26.     }
  27.     void printDocument2(String documentName)
  28.     {
  29.         System.out.println("Name of the document is = "+documentName);
  30.     }
  31. }
  32.  
  33. public class Main{
  34.     public static void main (String[] args) {
  35.         PrintServerEager obj1 = PrintServerEager.getInstance1();
  36.         PrintServerEager obj2 = PrintServerEager.getInstance1();
  37.  
  38.         obj1.printDocument1("Report.pdf");
  39.         obj2.printDocument1("Assignment.docx");
  40.  
  41.         if(obj1 == obj2){
  42.             System.out.println("Both references point to the same Eager instance");
  43.         }
  44.         else{
  45.             System.out.println("Get out!");
  46.         }
  47.  
  48.         PrintServerLazy obj3 = PrintServerLazy.getInstance2();
  49.         PrintServerLazy obj4 = PrintServerLazy.getInstance2();
  50.  
  51.         obj3.printDocument2("Thesis.pdf");
  52.         obj4.printDocument2("LabReport.docx");
  53.  
  54.         if(obj3==obj4)
  55.         {
  56.             System.out.println("Both references point to the same Lazy instance");
  57.         }
  58.         else{
  59.             System.out.println("Get out too!");
  60.         }
  61.     }
  62. }
Success #stdin #stdout 0.12s 57312KB
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Name of the document is = Report.pdf
Name of the document is = Assignment.docx
Both references point to the same Eager instance
Name of the document is = Thesis.pdf
Name of the document is = LabReport.docx
Both references point to the same Lazy instance
https://ideone.com/uEwBsV
language:
Java (HotSpot 12)
created:
2 days ago
visibility:
public

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