- public class Single{
- private static final Single s = new Single();
- private Single(){ };
- public static Single getInstance(){
- return s;}}
- public class Single{
- private static Single s = null;
- private Single(){}
- public static Single getInstance(){
- if(s==null){
- synchronized(Single.class){
- if(s==null) s=new Single();}}
- return s;}}
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