/* Ñ­»·½á¹¹Ö®Ò»£ºforÑ­»· 1. JavaÖй淶ÁË3ÖÖÑ­»·½á¹¹£ºfor¡¢while¡¢do-while 2. ·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 3. forÑ­»·µÄ¸ñʽ for(¢Ù;¢Ú;¢Ü){ ¢Û } Ö´Ðйý³Ì£º¢Ù - ¢Ú - ¢Û - ¢Ü - ¢Ú - ¢Û - ¢Ü - ... - ¢Ú */ class ForTest { public static void main(String[] args) { //ÐèÇó1£ºÌâÄ¿£ºÊä³ö5ÐÐHelloWorld /* System.out.println("HelloWorld"); System.out.println("HelloWorld"); System.out.println("HelloWorld"); System.out.println("HelloWorld"); System.out.println("HelloWorld"); */ for(int i = 1;i <= 50;i++){ System.out.println("HelloWorld"); } //´Ëʱ±àÒ벻ͨ¹ý¡£ÒòΪiÒѾ­³öÁËÆä×÷ÓÃÓò·¶Î§¡£ //System.out.println(i); //ÐèÇó2£º int num = 1; for(System.out.print("a");num < 3;System.out.print("c"),num++){ System.out.print("b"); } //Êä³ö½á¹û£ºabcbc System.out.println();//»»ÐÐ //ÐèÇó3£º±éÀú1-100ÒÔÄڵĿÊý£¬²¢»ñȡżÊýµÄ¸öÊý£¬»ñÈ¡ËùÓеÄżÊýµÄºÍ int count = 0;//¼Ç¼żÊýµÄ¸öÊý int sum = 0;//¼Ç¼ËùÓÐżÊýµÄºÍ for(int i = 1;i <= 100;i++){ if(i % 2 == 0){ System.out.println(i); count++; sum += i; //sum = sum + i; } } System.out.println("żÊýµÄ¸öÊýΪ£º" + count); System.out.println("żÊýµÄ×ܺÍΪ£º" + sum); } }