JavaÓÃforÑ環Map
¸ù¾ÝJDK5µÄÐÂÌØÐÔ,ÓÃForÑ»·Map,ÀýÈçÑ»·MapµÄKey
Java´úÂë
for(String dataKey : paraMap.keySet()) {
System.out.println(dataKey );
}
for(String dataKey : paraMap.keySet()) {
System.out.println(dataKey );
}
×¢ÒâµÄÊÇ,paraMap ÊÇÔõôÑù¶¨ÒåµÄ,Èç¹ûÊǼòµ¥µÄMap paraMap = new HashMap ();ÄÇÇ°ÃæµÄString¾ÍÖ»ÄÜ»»³ÉObjectÁË.
Ñ環Õû個mapµÄkeyºÍvalue
Java´úÂë
Map<Integer,String> map = new LinkedHashMap<Integer,String>();
map.put(1, "ÐÇÆÚÒ»");
map.put(2, "ÐÇÆÚ¶þ");
map.put(3, "ÐÇÆÚÈý");
map.put(4, "ÐÇÆÚËÄ");
map.put(5, "ÐÇÆÚÎå");
map.put(6, "ÐÇÆÚÁù");
map.put(7, "ÐÇÆÚÈÕ");
for(Map.Entry<Integer, String> entry: map.entrySet()) {
System.out.print(entry.getKey() + ":" + entry.getValue() + "\t");
}
Map<Integer,String> map = new LinkedHashMap<Integer,String>();
map.put(1, "ÐÇÆÚÒ»");
map.put(2, "ÐÇÆÚ¶þ");
map.put(3, "ÐÇÆÚÈý");
map.put(4, "ÐÇÆÚËÄ");
map.put(5, "ÐÇÆÚÎå");
map.put(6, "ÐÇÆÚÁù");
map.put(7, "ÐÇÆÚÈÕ");
for(Map.Entry<Integer, String> entry: map.entrySet()) {
System.out.print(entry.getKey() + ":" + entry.getValue() + "\t");
}
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package com.net;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
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