Map a = new HashMap();
a.put("one", "1");
a.put("two", "2");
a.put("three", "3");
a.put("seventeen", "17"); for (Iterator iter = a.keySet().iterator(); iter.hasNext(); ) {
String key = (String) iter.next();
System.out.println("a" + " [" + key + "]" + "=>" + a.get(key));
}
a.put("one", "1");
a.put("two", "2");
a.put("three", "3");
a.put("seventeen", "17"); for (Iterator iter = a.keySet().iterator(); iter.hasNext(); ) {
String key = (String) iter.next();
System.out.println("a" + " [" + key + "]" + "=>" + a.get(key));
}
解决方案 »
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