怎么打印昨天的当前时刻?(java)

import java.util.Calendar;

public class test {

/**
* @param args

*/

public void doing(){
Calendar cal=Calendar.getInstance();

System.out.println((cal.get(cal.MONTH)+1)+"月"+(cal.get(cal.DATE )-1)+"日"+cal.get(cal.HOUR_OF_DAY) +"时"+cal.get(cal.MINUTE) +"分"+cal.get(cal.SECOND )+"秒");
}
public static void main(String[] args) {
// TODO Auto-generated method stub
test t=new test();
t.doing();
}

}

就把获取到的时间中的天数减一不就行了嘛！~