String,utilDate,sqlDate之间的转换，时间戳

package com.company.factory.test;
import java.text.Format;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class DateTest {
public static void main(String[] args) throws ParseException {
// String转换utilDate
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String str = "2018-3-8";
Date parse = sdf.parse(str);
System.out.println(parse);
// utilDate转换为sqlDate
long time = parse.getTime();
java.sql.Date sqlDate = new java.sql.Date(time);
System.out.println(sqlDate);
// sqlDate转化为utilDate
// ResultSet.getDate()JDBC
// utilDate转换成String
Date date = new Date();
String format = sdf.format(date);
System.out.println(format);
}
}