package threadLocal;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* ThreadLocal使用方法1
*
* @author mxp
*
*/
public class MyThreadLocal {
private static ThreadLocal<SimpleDateFormat> threadLocal = new ThreadLocal<SimpleDateFormat>() {
@Override
protected SimpleDateFormat initialValue() {
return new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
}
};
public static Date parse(String dateStr) throws ParseException {
return threadLocal.get().parse(dateStr);
}
public static String format(Date date) {
return threadLocal.get().format(date);
}
}
/**
* ThreadLocal使用方法2
*
* @author mxp
*
*/
class MythreadLocal2 {
private static ThreadLocal<DateFormat> local = new ThreadLocal<DateFormat>();
private static DateFormat initValue() {
DateFormat dateFormat = local.get();
if (dateFormat == null) {
dateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
local.set(dateFormat);
}
return dateFormat;
}
public static Date parse(String dateStr) throws ParseException {
return initValue().parse(dateStr);
}
public static String format(Date date) {
return initValue().format(date);
}
}
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