/* Ñ­»·½á¹¹Ö®Ò»£ºwhileÑ­»· 1. ·²ÊÇÑ­»·½á¹¹£¬¾ÍÒ»¶¨»áÓÐ4¸öÒªËØ£º ¢Ù ³õʼ»¯Ìõ¼þ ¢Ú Ñ­»·Ìõ¼þ ---> Ò»¶¨ÊÇbooleanÀàÐ͵ıäÁ¿»ò±í´ïʽ ¢Û Ñ­»·Ìå ¢Ü µü´ú²¿·Ö 2.whileµÄ¸ñʽ ¢Ù while(¢Ú){ ¢Û ¢Ü } 3.Ö´Ðйý³Ì£º¢Ù - ¢Ú - ¢Û - ¢Ü - ¢Ú - ¢Û - ¢Ü - ... - ¢Ú 4. forÑ­»·ÓëwhileÑ­»·¿ÉÒÔÏ໥ת»»£¡ 5. forÑ­»·ºÍwhileÑ­»·µÄСÇø±ð£º³õʼ»¯Ìõ¼þµÄ×÷ÓÃÓò·¶Î§²»Í¬¡£whileÑ­»·Öеijõʼ»¯Ìõ¼þÔÚwhileÑ­»·½áÊøºó£¬ÒÀÈ»ÓÐЧ¡£ */ class WhileTest { public static void main(String[] args) { //ÐèÇó1£º±éÀú50´ÎHelloWorld int i = 1; while(i <= 50){ System.out.println("HelloWorld"); i++;//Ò»¶¨ÒªÐ¡ÐÄ£¡²»Òª¶ªÁË } //ÐèÇó2£º±éÀú1-100ÒÔÄڵĿÊý£¬²¢»ñȡżÊýµÄ¸öÊý£¬»ñÈ¡ËùÓеÄżÊýµÄºÍ int j = 1; int count = 0;//¼Ç¼żÊýµÄ¸öÊý int sum = 0;//¼Ç¼żÊýµÄ×ÜºÍ while(j <= 100){ if(j % 2 == 0){ System.out.println(j); count++; sum += j; } j++; } System.out.println("żÊýµÄ¸öÊýΪ£º" + count); System.out.println("żÊýµÄ×ܺÍΪ£º" + sum); } }