how to create a thread local variable in java
public class MyDateFormatter {
private ThreadLocal<SimpleDateFormat> simpleDateFormatThreadLocal = new ThreadLocal<>();
public String format(Date date) {
SimpleDateFormat simpleDateFormat = getThreadLocalSimpleDateFormat();
return simpleDateFormat.format(date);
}
private SimpleDateFormat getThreadLocalSimpleDateFormat() {
SimpleDateFormat simpleDateFormat = simpleDateFormatThreadLocal.get();
if(simpleDateFormat == null) {
simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
simpleDateFormatThreadLocal.set(simpleDateFormat);
}
return simpleDateFormat;
}
}
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