代码：
import java.util.*;
import java.text.*;
class Test {
public static void main(String args[]) throws Exception{
String a[] = {"~`!@#","$%^&*","()-_+","=|{}","[]:;"","',.?/"};
for(String s:a) {
System.out.println(s);
}
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Calendar cal = Calendar.getInstance();
Date date0 = formatter.parse("2008-02-29 23:58:58");
cal.setTime(date0);
cal.add(Calendar.MINUTE, 5);
Date date1 = cal.getTime();
cal.add(Calendar.MONTH, 1);
Date date2 = cal.getTime();
Listlist0 = new ArrayList();
list0.add(date0);
list0.add(date1);
list0.add(date2);
for(Date d:list0){
System.out.println(formatter.format(d));
}
}
} 
