java怎么比较两个时间的大小 如何用java比较两个时间或日期的大小
java\u4e2ddate\u7c7b\u578b\u600e\u4e48\u6bd4\u8f83\u5927\u5c0fdate \u5b9e\u73b0\u4e86Comparable \u63a5\u53e3 \u8c03\u7528compareTo(Date date)\u65b9\u6cd5\u53ef\u4ee5\u6bd4\u8f83\u5927\u5c0f\u3002
\u4f8b\u5982\uff1a\u6bd4\u8f83date1 \u548c date2\u7684\u5927\u5c0f
int res = date1.compareTo(date2)\uff0c\u76f8\u7b49\u5219\u8fd4\u56de0\uff0cdate1\u5927\u8fd4\u56de1\uff0c\u5426\u5219\u8fd4\u56de-1\u3002
Java\u662f\u4e00\u79cd\u53ef\u4ee5\u64b0\u5199\u8de8\u5e73\u53f0\u5e94\u7528\u7a0b\u5e8f\u7684\u9762\u5411\u5bf9\u8c61\u7684\u7a0b\u5e8f\u8bbe\u8ba1\u8bed\u8a00\u3002Java \u6280\u672f\u5177\u6709\u5353\u8d8a\u7684\u901a\u7528\u6027\u3001\u9ad8\u6548\u6027\u3001\u5e73\u53f0\u79fb\u690d\u6027\u548c\u5b89\u5168\u6027\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8ePC\u3001\u6570\u636e\u4e2d\u5fc3\u3001\u6e38\u620f\u63a7\u5236\u53f0\u3001\u79d1\u5b66\u8d85\u7ea7\u8ba1\u7b97\u673a\u3001\u79fb\u52a8\u7535\u8bdd\u548c\u4e92\u8054\u7f51\uff0c\u540c\u65f6\u62e5\u6709\u5168\u7403\u6700\u5927\u7684\u5f00\u53d1\u8005\u4e13\u4e1a\u793e\u7fa4\u3002
Date\u6709\u65b9\u6cd5compareTo() \u8fd4\u56de-1\u30010\u30011\uff0c\u5c31\u77e5\u9053\u5927\u5c0f\u4e86
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现将时间转换成毫秒，然后再比较大小
绛旓細Calendar start = Calendar.getInstance();Calendar end = Calendar.getInstance();start.set(2010, 7, 23);end.set(2010, 8, 26);Date startDate = start.getTime();Date endDate = end.getTime();long startTime = startDate.getTime();long endTime = endDate.getTime();long diffTime ...
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绛旓細浣犲ソ锛屽鏋滀綘鐨鏃堕棿鐢ㄧ殑鏄疭tring绫诲瀷锛屼緥濡傚凡缁忔牸寮忓寲鎴愶細YYYY-MM-DD HH:mm:ss杩欑鏍煎紡鐨勶紝鐩存帴浣跨敤compareTo鍗冲彲锛屽綋鐒朵簡Date绫诲瀷鐨勪篃鏀寔鐩存帴浣跨敤璇ユ柟娉曡繘琛姣旇緝锛屽洜涓篠tirng锛孌ate閮藉疄鐜颁簡Comparable鎺ュ彛銆
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绛旓細2銆佸皢鍙栧嚭鐨涓や釜鏃堕棿杩涜鏍煎紡鍖栵細浣跨敤java.text.SimpleDateFormat SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd") ;//灏嗘棩鏈熸牸寮忓寲涓猴細yyyy-MM-dd String n = formatter.format(now) ; // 灏嗗綋鍓嶆椂闂磋繘琛屾牸寮忓寲 3銆姣旇緝锛氫娇鐢⊿tring绫诲瀷鐨勬瘮杈冿細compareTo // 鐪婣PI 濡傦細鏁版嵁搴...
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