package test3;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import org.omg.CORBA.SystemException;
public class StringType {
public static void main(String[] args) {
String str1 = "string类型";
StringBuffer str2 = new StringBuffer("StringBuffer类");
str2.append("相当于oc的NSMutabeleString");
System.out.println(str2);
StringBuilder str3 = new StringBuilder("不是线程安全的,相对于StringBuffer来说");
Date nowDate = new Date();
System.out.println(nowDate.toString());
SimpleDateFormat ft = new SimpleDateFormat("E yyyy-MM-dd 'at' hh:mm:ss a zzz");
System.out.println(ft.format(nowDate));
Calendar c = Calendar.getInstance();
c.set(2016, 8, 16, 2, 10, 20);
Calendar c1 = Calendar.getInstance();
int year = c1.get(Calendar.YEAR);
int month = c1.get(Calendar.MONTH) + 1;
int date = c1.get(Calendar.DATE);
int hour = c1.get(Calendar.HOUR_OF_DAY);
int minute = c1.get(Calendar.MINUTE);
int second = c1.get(Calendar.SECOND);
int day = c1.get(Calendar.DAY_OF_WEEK);
System.out.println(year + month + date + hour + minute + second + day);
String months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
int thisYear;
GregorianCalendar gcalendar = new GregorianCalendar();
System.out.print("Date: ");
System.out.print(months[gcalendar.get(Calendar.MONTH)]);
System.out.print(" " + gcalendar.get(Calendar.DATE) + " ");
System.out.println(year = gcalendar.get(Calendar.YEAR));
System.out.print("Time: ");
System.out.print(gcalendar.get(Calendar.HOUR) + ":");
System.out.print(gcalendar.get(Calendar.MINUTE) + ":");
System.out.println(gcalendar.get(Calendar.SECOND));
if (gcalendar.isLeapYear(year)) {
System.out.println("当前年份是闰年");
} else {
System.out.println("当前年份不是闰年");
}
try {
System.out.println(new Date() + "\n");
Thread.sleep(1000 * 3);
System.out.println(new Date() + "\n");
} catch (Exception e) {
System.out.println("捕获到异常");
}
}
}