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Java > Learn Java > what is the use of request get parameter map in servlet...
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what is the use of request get parameter map in servlet with example

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Map of all input elements of form of Html can be retrieved with getParameterMap() method and it is very rarely used. Map requestParams = request.getParameterMap();
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All the form data will be stored in the form of Map with key value pair. This Map object will be returned from the getParameterMap().
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Request get Parameter is the method which is used to handle form data and the return type is String and we need to convert String data to required data using parse methods.
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Request get Parameter is the method which is used to handle form data and the return type is String and we need to convert String data to required data using parse methods.
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5+ years of experience in computer science with c++ for class 11th and 12th , java, spring mvc, angular.js for MCA, BCA, 12th, B.tech. Working as Team leader in IT company

ServletRequest's getParameterMap() method is used to obtain the java.util.Map of all request parameters i.e. all input element values of html form. getParameterMap() methods signature is Map getParameterMap() method returns java.util.Map parameter names as key and parameter values as array...
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ServletRequest's getParameterMap() method is used to obtain the java.util.Map of all request parameters i.e. all input element values of html form. getParameterMap() methods signature is Map getParameterMap() method returns java.util.Map parameter names as key and parameter values as array of String read less
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request.getParameter() is used to take parameters from any JSP or HTML page into String format
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Map of all input elements of form of Html can be retrieved with getParameterMap() .return type will be Map.
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Java Trainer

It is used for selecting more than one value from html page like "language known" one can have multiple option this regard .In this case getrequestmap() is usefull
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getParameterMap method: ServletRequest’s getParameterMap() method is used to obtain the java.util.Map of all request parameters i.e. all input element values of html form. getParameterMap() Method signature is: Map getParameterMap() Returns a java.util.Map of the parameters of this request. Request...
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getParameterMap method: ServletRequest’s getParameterMap() method is used to obtain the java.util.Map of all request parameters i.e. all input element values of html form. getParameterMap() Method signature is: Map getParameterMap() Returns a java.util.Map of the parameters of this request. Request parameters are extra information sent with the request. For HTTP servlets, parameters are contained in the query string or posted form data. Returns: an immutable java.util.Map containing parameter names as keys and parameter values as map values. The keys in the parameter map are of type String. The values in the parameter map are of type String array. For more details and good examples pls. find the useful weblinks: http://www.javatutorials.co.in/servlet-getparametermap-example/ http://docs.oracle.com/javaee/5/api/javax/servlet/ServletRequest.html https://tomcat.apache.org/tomcat-5.5-doc/servletapi/javax/servlet/ServletRequestWrapper.html read less
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The use of request get parameter map in servlet - getParameterMap() method is used to obtain the java.util.Map of all request parameters i.e. all input element values of html form. getParameterMap() methods.returns java.util.Map parameter names as key and parameter values as array of String.
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