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added 73 characters in body
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user4120936
user4120936 
            <<input type="button" value="Submit" onClick="submit()" />

            <input type="button" value="Submit" onClick="submit()" /><script>
                    var a = "I am A"
                    var b = "I am B"
                <script>    var c = "I am C"
                    var arr = [a,b,c];

                    function submit() {
                        $.ajax({

                            method : "POST",
                            url : 'myServlet',
                            dataType : "text/html",
                            data : {sts:arr}
                            success : function(resp) {
                            },
                            error : function(data) {
                            },
                        });
                    }

                </script>
            <!--  </form> -->
            </body>

            </html>

            <
            <input type="button" value="Submit" onClick="submit()" />

                <script>
                    var arr = [a,b,c];

                    function submit() {
                        $.ajax({

                            method : "POST",
                            url : 'myServlet',
                            dataType : "text/html",
                            data : {sts:arr}
                            success : function(resp) {
                            },
                            error : function(data) {
                            },
                        });
                    }

                </script>
            <!--  </form> -->
            </body>

            </html>

            <input type="button" value="Submit" onClick="submit()" />

                <script>
                    var a = "I am A"
                    var b = "I am B"
                    var c = "I am C"
                    var arr = [a,b,c];

                    function submit() {
                        $.ajax({

                            method : "POST",
                            url : 'myServlet',
                            dataType : "text/html",
                            data : {sts:arr}
                            success : function(resp) {
                            },
                            error : function(data) {
                            },
                        });
                    }

                </script>
            <!--  </form> -->
            </body>

            </html>
Source Link
user4120936
user4120936

Array in servlet as null

I am trying to get array, which is created in javascript function to my java class.

In my java class this array comes as a null value.

here is my jsp code,

            <
            <input type="button" value="Submit" onClick="submit()" />

                <script>
                    var arr = [a,b,c];

                    function submit() {
                        $.ajax({

                            method : "POST",
                            url : 'myServlet',
                            dataType : "text/html",
                            data : {sts:arr}
                            success : function(resp) {
                            },
                            error : function(data) {
                            },
                        });
                    }

                </script>
            <!--  </form> -->
            </body>

            </html>

my java class to access the array,

            protected void doPost(HttpServletRequest request, HttpServletResponse response) {               
                String[] n=request.getParameterValues("sts");   
                System.out.println(n);
            }

also tried the following

            protected void doPost(HttpServletRequest request, HttpServletResponse response) {               
                String[] n=request.getParameterValues("sts[]");     
                System.out.println(n);
            }

both prints only null and not array.

Can anyone say where the mistake happens?

Thanks in advance.