==============方法一=========================== import java.util.HashMap; import java.util.Map; import java.util.Set; import java.util.Iterator; public class Test{ public static void main (String[] args){ 结果: E:\test>java Test 键:3值:zx3 键:2值:zx2 键:1值:zx1 键:4值:zx4 ==================方法二====================== import java.util.HashMap; import java.util.Map; import java.util.Set; import java.util.Iterator; import java.util.Map.Entry; public class Test{ public static void main (String[] args){ Map<String,String> map = new HashMap<String,String>(); map.put("1","zx1"); map.put("2","zx2"); map.put("3","zx3"); map.put("4","zx4"); Iterator<Map.Entry<String, String>> iterator = map.entrySet().iterator();//使用entry while(iterator.hasNext()){ Map.Entry<String, String> entry = iterator.next(); System.out.println("键:"+entry.getKey()+"值:"+entry.getValue()); } } } 结果: E:\test>java Test 键:3值:zx3 键:2值:zx2 键:1值:zx1 键:4值:zx4
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