java - 如何从Java Maps(多层关联数组)中获取键、值

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我有以下数组( map ):

Map<String, String[]> fields = new HashMap<String, String[]>();
fields.put( "memberDOB", new String[]{ "true", "", "", "2", "date"} );
fields.put( "memberDOJ", new String[]{ "true", "", "", "2", "date"} );
fields.put( "membershipDate", new String[]{ "true", "", "", "2", "date"} );
fields.put( "txtAccountNo", new String[]{ "true", "1", "10", "1", "int"} );
fields.put( "txtMemIntro1Address", new String[]{ "true", "5", "", "1", "string"} );

   validate validateF = new validate();
      if(validateF.validate_fields(fields)){
          //validated
      }

检索值和键:

public boolean validate_fields(Map<String, String[]> fields) {
       //How to loop through each key
        return true;
    }

Answer 1

您可以使用:

for (String key : fields.keySet()) {
    // key iterate over all keys in fields
}