INTERVIEW QUESTIONS J2EE JSP DETAILS

Question: I have a String name & Map m, in my bean class. I have get & set methods on both.

To Display the String name, i do


The above one works fine.
Te below one, displays the entire Map contents


I know the KEY, how do i display the VALUE for that KEY

Answer: If you have key with you then :map.get(key) gives you the value of the key in the map.or Map displayMap // lets say you have displayMap as a Map variableSet entrySet = displayMap.entrySet(); for(Iterator iter = entrySet.iterator(); iter.hasNext();) { Map.Entry entry = (Map.Entry)iter.next(); String key =(String)entry.getValue(); String value = (String)displayMap.get( entry.getKey()); }

If you have key with you then :map.get(key) gives you the value of the key in the map.or Map displayMap // lets say you have displayMap as a Map variableSet entrySet = displayMap.entrySet(); for(Iterator iter = entrySet.iterator(); iter.hasNext();) { Map.Entry entry = (Map.Entry)iter.next(); String key =(String)entry.getValue(); String value = (String)displayMap.get( entry.getKey()); } Source: CoolInterview.com

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