stringutil.java

设备租赁系统

package common;


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



public class StringUtil {
	public static Timestamp stringToTimestamp(String timestampStr, String format) {
		if ( timestampStr == null || timestampStr.trim ( ).equals ( "" ) ) {
			return null;
		}
		SimpleDateFormat dateFormat = new SimpleDateFormat ( format );
		try {
		Date date = dateFormat.parse ( timestampStr );
		return new Timestamp ( date.getTime ( ) );
		} catch ( Exception e ) {
		System.out.println ( e.getMessage ( ) );
		}
			return null;
		}
	public static int getDayGap(Timestamp t1,Timestamp t2){
		if(t1==null){
			return 0;
		}
		long DAY = 24L * 60L * 60L * 1000L;    
		SimpleDateFormat df = new SimpleDateFormat( "MM.dd.yyyy" );      
		int gap=(int) (( t1.getTime() - t2.getTime() ) / DAY) ;
		return gap;
	}
}