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差分
このページの2つのバージョン間の差分を表示します。
| 両方とも前のリビジョン前のリビジョン | |||
| study:java:design_pattern:singleton [2010/03/10 13:13] – banana | study:java:design_pattern:singleton [2014/01/09 00:12] (現在) – banana | ||
|---|---|---|---|
| 行 22: | 行 22: | ||
| 고전적인 싱글턴 구현법을 소개합니다. | 고전적인 싱글턴 구현법을 소개합니다. | ||
| <code java> | <code java> | ||
| - | public class Singleton{ | + | public class Singleton { |
| | | ||
| - | | + | |
| - | | + | |
| - | | + | if (uniqueInstance == null) { |
| uniqueInstance = new Singleton(); | uniqueInstance = new Singleton(); | ||
| } | } | ||
| 行 49: | 行 49: | ||
| 다음의 코드를 살펴보세요. | 다음의 코드를 살펴보세요. | ||
| <code java> | <code java> | ||
| - | public class Singleton{ | + | public class Singleton { |
| | | ||
| - | | + | |
| - | | + | |
| - | | + | if (uniqueInstance == null) { |
| | | ||
| } | } | ||
| 行 89: | 行 89: | ||
| <code java> | <code java> | ||
| - | public class Singleton{ | + | public class Singleton { |
| | | ||
| - | | + | |
| - | | + | |
| | | ||
| } | } | ||
| 行 110: | 行 110: | ||
| <code java> | <code java> | ||
| - | public class Singleton{ | + | public class Singleton { |
| private volatile static Singleton uniqueInstance; | private volatile static Singleton uniqueInstance; | ||
| - | private Singleton(){} | + | private Singleton() {} |
| - | public static Singleton getInstance(){ | + | public static Singleton getInstance() { |
| - | if(uniqueInstance==null){ | + | if (uniqueInstance == null) { |
| - | synchronized(Singleton.class){ | + | synchronized(Singleton.class) { |
| - | if(uniqueInstance==null){ | + | if (uniqueInstance == null) { |
| | | ||
| } | } | ||
