Create---Single-instance Singleton

• Code:

1  Packagecom.design;2 3 /**4 * Test Class5  * @authorAdministrator6  *7  */8  Public classTest {9     /**Ten * Main function One      * @paramargs A      */ -      Public Static voidMain (string[] args) { -Singleton First_inst =singleton.getinstance (); theFirst_inst.setstring ("8288282"); -          -Singleton Sencond_inst =singleton.getinstance (); -System.out.println ("Sencond_inst:" +sencond_inst.getstring ()); +Sencond_inst.setstring ("I am a single instance"); -          +Singleton Third_inst =singleton.getinstance (); ASystem.out.println ("Third_inst:" +third_inst.getstring ()); at     } - } -  - /** - * Single Instance -  * @authorAdministrator in  * -  */ to classSingleton + { -     /** the * Get Instance *      * @return $      */Panax Notoginseng      Public StaticSingleton getinstance () -     { the         returnMyinst; +     } A      the     /** + * Get String -      * @return $      */ $      PublicString getString () -     { -         returnstr; the     } -     Wuyi     /** the * Set String -      * @paramStr Wu      */ -      Public voidsetString (String str) About     { $          This. str =str; -     } -      -     /** A * Create an instance +      */ the     Private StaticSingleton Myinst =NewSingleton (); -      $     /** the * Test Code the      */ the     PrivateString str; the      -     /** in * Privatization Constructor the      */ the     PrivateSingleton () About     { thestr = ""; the     } the}

• Results

sencond_inst:8288282
Third_inst: I am a single instance

Create---Single-instance Singleton