java中怎么把日期格式化linux在shell中日期格式化

import java.text.SimpleDateFormat;
import java.util.Date;

public class test{

    public static void mainString args[]) {
        Date newTime = new Date);
        //设置时间格式
        SimpleDateFormat sdf1 = new SimpleDateFormat"y-M-d h:m:s a E");
        SimpleDateFormat sdf2 = new SimpleDateFormat"yy-MM-dd hh:mm:ss a E");
        SimpleDateFormat sdf3 = new SimpleDateFormat"yyyy-MMM-ddd hhh:mmm:sss a E");
        SimpleDateFormat sdf4 = new SimpleDateFormat"yyyyy-MMMM-dddd hhhh:mmmm:ssss a E");
        
        //获取的时间，是本机的时间
        String formatDate1 = sdf1.formatnewTime);
        String formatDate2 = sdf2.formatnewTime);
        String formatDate3 = sdf3.formatnewTime);
        String formatDate4 = sdf4.formatnewTime);

        System.out.printlnformatDate1);  
        System.out.printlnformatDate2); 
        System.out.printlnformatDate3); 
        System.out.printlnformatDate4); 
    }
}