Problem with parsing String convertion to int in java

**Please help me for conversion my line of codes are mention below:** String deptName = "IT"; String dept_test = request.getParameter("deptName").trim(); System.out.println("Dept name vlue is"+dept_test); // problem here for casting... int dept_id = Integer.parseInt(dept_test);
what is the problem exactly? What is the content of dept_test when the problem occurs?

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