³õѧJAVAÖ®Ò»
1¡¢ Ò»¸öÊýÈç¹ûÇ¡ºÃµÈÓÚÆäÒò×Ó£¨³ýÁ˱¾ÉíÒÔÍâµÄÔ¼ÊýÖ®ºÍ£©£¬¸ÃÊý¾Í³ÆΪ“ÍêÊý”¡£±àдһ¸ö Java Application ³ÌÐò£¬Çó³ö 1000 ÒÔÄÚµÄËùÓÐÍêÊý¡£
public class homework11
{
public static void main(String[] args)
//Êä³ö1000ÒÔÄÚµÄËùÓÐÍêÊý
{
int sum;
System.out.print( "**********1000ÒÔÄÚµÄËùÓÐÍêÊýÈçÏÂ:");
System.out.println(); //»»ÐÐ
for(int i = 1; i <= 1000; i++)
{
sum=0;//³õʼ»¯sum±äÁ¿£¬²¢ÔÚÿ¸öiµÄforµÄÑ»·ºóʹsumÖµ¹éÁã
for(int j = 1; j < i; j++){
if(i % j == 0) //È¡ÓàÊý
sum = sum + j;//Çói³ýÁ˱¾ÉíÒÔÍâµÄËùÓÐÔ¼ÊýÖ®ºÍ
}
if(sum == i) //ÅжÏiÊÇ·ñΪÍêÊý£¬¼´ÅжÏiÊÇ·ñµÈÓÚ³ýÁ˱¾ÉíÒÔÍâµÄÔ¼ÊýÖ®ºÍ
System.out.println( "-~-~-~-~-~-~-~-~-~-~-~-~-~-~~~~~"+i + "ÊÇÍêÊý");
//Êä³öÍêÊý
} //½áÊøforÑ»·
System.out.println(); //»»ÐÐ
} //½áÊømainº¯Êý
}//½áÊøclass
ÔËÐнá¹û£º
D:\jdk\xi>javac homework11.java
D:\jdk\xi>java homework11
**********1000ÒÔÄÚµÄËùÓÐÍêÊýÈçÏÂ:
-~-~-~-~-~-~-~-~-~-~-~-~-~-~~~~~6ÊÇÍêÊý
-~-~-~-~-~-~-~-~-~-~-~-~-~-~~~~~28ÊÇÍêÊý
-~-~-~-~-~-~-~-~-~-~-~-~-~-~~~~~496ÊÇÍêÊý
2¡¢±àдһ¸ö³ÌÐò£¬°Ñ±äÁ¿ n µÄ³õʼֵÉèÖÃΪ 1678£¬È»ºóÀûÓóý·¨ÔËËãºÍÈ¡ÓàÔËËã°Ñ±äÁ¿µÄÿλÊý×Ö¶¼Ìá³öÀ´²¢´òÓ¡£¬Êä³ö½á¹ûΪ£º n £½ 1678
public class homework12 {
// ÏÔʾָ¶¨ÊýµÄÿһλÊý×Ö
private void show() {
int n = 1678; //±äÁ¿ n µÄ³õʼֵÉèÖÃΪ 1678
int a,b,c,d; &nbs
Ïà¹ØÎĵµ£º
ÔÚJavaÖУ¬Ê¹ÓÃnew¹Ø¼ü×ÖºÍClass.forName("a.class.Name").newInstance¶¼¿ÉÒÔ´´½¨¶ÔÏó£¬ËüÃÇÓÖÓÐʲôÇø±ðÄØ£¿
1¡¢ÀàµÄ¼ÓÔØ·½Ê½²»Í¬¡£
ÔÚÖ´ÐÐClass.forName("a.class.Name")ʱ£¬JVM»áÔÚclassapthÖÐÈ¥ÕÒ¶ÔÓ¦µÄÀಢ¼ÓÔØ£¬ÕâʱJVM»áÖ´ÐиÃÀàµÄ¾²Ì¬´úÂë¶Î¡£ÔÚʹÓà ......
±¾ÎÄÕë¶Ôjdk6.0ÖÐjava.lang.ClassÀàµÄAPI½øÐÐÁ˼òµ¥µÄʵÀýÓ¦Óã¬Àý×Ó¼òµ¥Ò׶®£¬±È½ÏÊʺÏÈëÃż¶ÔĶÁ¡£
ʵÀý¼ò½é£º
/*
*IncludeInnerClassÀàÖаüº¬ÁËÈýÖÖ·ÃÎÊ¿ØÖƵÄÄÚ²¿À࣬²¢ÇÒÒÔÕâÈý¸öÄÚ²¿ÀàµÄÒýÓöÔÏóºÍÒ»¸öÕûÐÍÊý×÷ΪÊôÐÔ£¬ÔÚÍⲿÀàµÄ·½·¨Öзֱðµ÷ÓÃÁË ÄÚ²¿ÀàµÄ·½·¨
*ÍⲿÀàÓÐÁ½¸ö¹¹Ôì·½·¨£¬ ......
JavaÊý¾Ý¿âÁ¬½Ó£¨JDBC£©ÓÉÒ»×éÓà Java ±à³ÌÓïÑÔ±àдµÄÀàºÍ½Ó¿Ú×é³É¡£JDBC Ϊ¹¤¾ß/Êý¾Ý¿â¿ª·¢ÈËÔ±ÌṩÁËÒ»¸ö±ê×¼µÄ API£¬Ê¹ËûÃÇÄܹ»Óô¿Java API À´±àдÊý¾Ý¿âÓ¦ÓóÌÐò¡£È»¶ø¸÷¸ö¿ª·¢É̵Ľӿڲ¢²»ÍêÈ«Ïàͬ£¬ËùÒÔ¿ª·¢»·¾³µÄ±ä»¯»á´øÀ´Ò»¶¨µÄÅäÖñ仯¡£±¾ÎÄÖ÷Òª¼¯ºÏÁ˲»Í¬Êý¾Ý¿âµÄÁ¬½Ó·½Ê½¡£
¡¡¡¡Ò»¡¢Á¬½Ó¸÷ÖÖÊý¾Ý¿ ......
ÖÚËùÖÜÖª£¬javaÖÐintÐͺÍcharÐÍÊý¾Ý²»ÏñcÓïÑÔÖÐÄÇÑù¿ÉÒÔÈÎÒâת»»£¬¼´²»¿ÉÒÔ½«Ò»¸öintÐͱäÁ¿×Ô¶¯×ª»»ÎªcharÐÍ£¬ÈçÏÂÃæ´úÂëÖеÄÑÝʾ:
public class TestSort{
public static void main(String args[]){
int x='a';//²»»á²úÉú±àÒë´íÎó£¬ÒòΪ'a'¸³¸øxÊÇÒþʽת»»
System.out.println(x);
&nb ......
¡¡¡¡»¥ÁªÍøµÄáÈÆð£¬Ê¹µÃPC´Ó²úÒµÖÐÐÄÏò±ßÔµ¹ý¶É£¬¶øÀú¾20ÓàÄêµÄ·¢Õ¹£¬PCÊг¡Ò²Ç÷ÓÚ±¥ºÍ£¬´½Íö³Ýº®£¬Õâ½Ð¿¿PC³Ô·¹µÄ΢ÈíÈçºÎ²»¼±£¿ÎüÈ¡Á˵±Ä꿪·¢ä¯ÀÀÆ÷Èí¼þµÄ½Ìѵ£¬2000Äê6Ô£¬Î¢ÈíÆô¶¯.Net¼Æ»®£¬½ø¾üÍøÂç·þÎñÊг¡£¬±È¶û·¸Ç´Ä×ÔÐŵسƣº"ÊÀ½çÉÏËùÓÐÒ»Çж¼½«°üÀ¨ÔÚ»¥ÁªÍø·þÎñÖС£"
¡¡¡¡.NETµÄ˼ÏëÆäʵÊÇÀ´Ô ......