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Date ---->String
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String date = sdf.fomat(new Date());
String ---->Date
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date date = sdf.parse("2010-03-16");
ÈÕÆÚ±È½Ï´óС£¬Õâ¾ÍÓõ½ÁËDateÀàÖеÄbefore()ºÍafter()·½· ......
package test;
/**
*
* @author openpk
*/
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Semaphore;
public class Main {
public static void main(String[] args) {
// Ï̳߳Ø
ExecutorService exec = Executors ......
=====suppose such a method:
public static void openFile(String fileName, PrintWriter stream) throws FileNotFoundException
{
stream = new PrintWriter(fileName);
}
=====then we want to use it this way:
PrintWriter toFile = null;
try
{
openFile("data.txt", t ......
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KeywordFilter.java:
import java.io.InputStream;
import java.util.Enumeration;
import java.util.Properties;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class KeywordFilter
{
private static Pattern pattern = null;
private static KeywordFilter filter = new KeywordF ......