public class Test3 { public static void main(String[] args) { int x=10; if(x>10) { int y; y=3; System.out.println("y="+y);
} System.out.println("x="+x);
} ΪʲôֻÊä³öx=10,¶øy²»Êä³ö£¿£¿£¿£¿£¿ ÒòΪx=10£¬²»Âú×ãx>10µÄÌõ¼þ£¬ËùÒÔÖ±½ÓÌø¹ýifÓï¾ä¡£¡£¡£¡£¡£ Â¥ÉÏÕý½â¡£ÏÖÔÚµÄÈËÕâÎÊÌâ¶¼Ìù³öÀ´ÁË ¡£¡£¡£ Õâ¸öÎÊÌâ¿´ËÆºÜÓÞ´À£¬µ«ÊÇÈç¹ûÄ㽫³ÌÐò¸ÄһϠpublic class Test { public static void main(String[] args) { int x=10; if(x <100) { int y; y=x; System.out.println("x="+x); System.out.println("y="+y); } System.out.println("y="+y);
ÓÃRandomAccessFileдÈëTXTÎļþ²é¿´Ê±ÊÇÂÒÂ룬ÇëÎÊÓÐʲô·½·¨¿ÉÒÔд³É¿É¶ÁµÄÎļþ£¬²»ÊÇÓÃÆäËûµÄÎļþ²Ù×÷£¬¾ÍÊÇÖ»ÓÃRandomAccessFileµÄ·½·¨ÊÇ·ñ¿ÉÒÔʵÏÖ£¿ Java code: import java.io.*; public class RandomAcce ......