Posted by ±èâÅ on August 12, 1997 at 10:37:24:
In Reply to: [Áú¹®] ½ÇÇàÆÄÀÏÀ» ¸¸µå´Â ¹ý posted by ¹Ú¼ºÃ¶ on August 12, 1997 at 10:04:14:
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Vector´Â µ¿Àû±¸Á¶¸¦ °¡Áö´Â Array(?)ÀÔ´Ï´Ù.
nullpointexception Error´Â Vector °´Ã¼°¡ empty(¾Æ¹«°Íµµ ¾øÀ½)Àε¥
°ªÀ» accessÇÒ¶§ ¹ß»ýÇÕ´Ï´Ù.
´Ù½ÃÇѹø Vector °´Ã¼¿¡ °ªÀÌ Á¸ÀçÇÏ´ÂÁö¸¦ »ìÆ캸¼¼¿ä.
´ÙÀ½Àº Á¦°¡ ¸¸µç Vector class¿¡ ´ëÇÑ ¿¹Á¦ÀÔ´Ï´Ù.
¸ÕÀú 1À» vec(°´Ã¼)ÀÇ Ã³À½¿¡ µÎ°³ »ðÀÔÇÏ°í,
for j...¿¡¼ 3°³¸¦ »ðÀÔÇÏ´Â ¿¹Á¦ÀÔ´Ï´Ù.
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import java.util.Vector;
class VectorTest {
public static void main(String argv[]) {
Vector vec = new Vector();
int i = 1;
vec.addElement(new Integer(1)); //intÇüÀ» Integer(°´Ã¼)·Î ¸¸µé¾î ÁØ´Ù.
vec.addElement(new Integer(1));
while( vec.size() >= 0 && i <= 3 ) {
vec.removeElementAt(0);
for (int j=1; j<=3; j++) {
vec.addElement(new Integer(j));
}
i++;
}
for (int k=0;k < vec.size(); k++)
System.out.println(vec.elementAt(k));
System.out.println(vec.size());
}
}
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