javaÖеÄforeachÓ÷¨
import java.util.*;
public class ForeachExample {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Random r = new Random();
int[] x = new int[10];
for (int i = 0; i < x.length; i++) {
x[i] = r.nextInt(100);
}
// foreachµÄʹÓÃ
for (int y : x) {
System.out.print(y + " ");
}
System.out.println();
// ÁíÒ»ÖÖ´òÓ¡Êý×éµÄ·½Ê½
System.out.println(Arrays.toString(x));
for (char c : "I am a good girl!".toCharArray())
System.out.print(c + " ");
}
}
Ïà¹ØÎĵµ£º
Javaѧϰ´ÓÈëÃŵ½¾«Í¨
Ò»¡¢ JDK (Java Development Kit)
JDKÊÇÕû¸öJavaµÄºËÐÄ£¬°üÀ¨ÁËJavaÔËÐл·¾³£¨Java Runtime Envirnment£©£¬Ò»¶ÑJava¹¤¾ßºÍJava»ù´¡µÄÀà¿â(rt.jar)¡£²»ÂÛʲôJavaÓ¦Ó÷þÎñÆ÷ʵÖʶ¼ÊÇÄÚÖÃÁËij¸ö°æ±¾µÄJDK¡£Òò´ËÕÆÎÕJDKÊÇѧºÃJavaµÄµÚÒ»²½¡£×îÖ÷Á÷µÄJ ......
JAVAÏà¹Ø»ù´¡ÖªÊ¶
1¡¢ÃæÏò¶ÔÏóµÄÌØÕ÷ÓÐÄÄЩ·½Ãæ
1.³éÏó£º
³éÏó¾ÍÊǺöÂÔÒ»¸öÖ÷ÌâÖÐÓ뵱ǰĿ±êÎ޹صÄÄÇЩ·½Ã棬ÒÔ±ã¸ü³ä·ÖµØ×¢ÒâÓ뵱ǰĿ±êÓйصķ½Ãæ¡£³éÏó²¢²»´òËãÁ˽âÈ«²¿ÎÊÌ⣬¶øÖ»ÊÇÑ¡ÔñÆäÖеÄÒ»²¿·Ö£¬ÔÝʱ²»Óò¿·Öϸ½Ú¡£³éÏó°üÀ¨Á½¸ö·½Ã棬һÊǹý³Ì³éÏ󣬶þÊÇÊý¾Ý³éÏó¡£
2.¼Ì³Ð£º
¼Ì
³ÐÊÇÒ»ÖÖÁª½áÀàµÄ²ã ......
Ò»¡¢IOÁ÷µÄÈýÖÖ·ÖÀ෽ʽ
1.°´Á÷µÄ·½Ïò·ÖΪ£ºÊäÈëÁ÷ºÍÊä³öÁ÷
2.°´Á÷µÄÊý¾Ýµ¥Î»²»Í¬·ÖΪ£º×Ö½ÚÁ÷ºÍ×Ö·ûÁ÷
3.°´Á÷µÄ¹¦Äܲ»Í¬·ÖΪ£º½ÚµãÁ÷ºÍ´¦ÀíÁ÷
¶þ¡¢IOÁ÷µÄËÄ´ó³éÏóÀࣺ
×Ö·ûÁ÷£ºReader Writer
& ......
¿ÉÒÔ°ÑÆÕͨµÄJava³ÌÐò×ö³ÉÕæÕýµÄexe,Ò²¾ÍÊǵ¥Ò»¸öexe¾Í¿ÉÒÔÔÚûÓа²×°JVMµÄ»úÆ÷ÉÏÔËÐС£ÕâÑùµÄ¹¤¾ß³£¼ûµÄÓÐJETºÍgcj.ǰÕßÊÇÊշѵ쬶øÇÒ×ö³öÀ´µÄexe»¹ÊÇÐèÒªÒ»¶Ñdll¡£ÍƼöʹÓÃgcj.ËûÓÐwindowsºÍLinux°æ£¬Ö±½ÓÏÂÔØzip°ü£¬²»ÐèÒª°²×°£¬ÀïÃæÓв»ÉÙÀý×Ó£¬Ò»Ð©buildµÄÅú´¦ÀíÎļþ¡£´ÓÔÀíÀ´Ëµgcj×Ô¼ºÊµÏÖÁËJVM¹æ·¶£¬Ò²¾ÍÊÇÄ ......
1.Ê×ÏÈ´´½¨Ò»¸ö¹¤³ÌËæ±ãÃüÃû¡£
2.´´½¨Ò»¸öÀàÃüÃûΪReg.
3.Ö´ÐдúÂë
4.ÊäÈë×¢²áµÄÐÕÃû£¬ÏÔʾÀ¸Ä¿»á³öÏÖplease input register name:£¬Ö»ÒªÊäÈëÓ¢ÎÄÃûÈ»ºó»Ø³µ£¬×¢²áÂë¾Í³öÀ´ÁË¡£°ÑÐÕÃûºÍ×¢²áÂëÏñ£º
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public clas ......