numberformatexception

I have a checkbox in my JSP page that accepts integer values: <form:checkbox path="somePath" value="2" /> Dangerous Checkbox <br /> If the user changes the value of the input to a String value, e.g.: <form:checkbox path="somePath" value="blah" /> Dangerous Checkbox <br /> the page will throw a NumberFormatException . How can I catch this in my Controller and show a meaningful message? you can use JSTL's c:catch tag: <c:catch var ="numberFormatException"> <form:checkbox path="somePath" value="blah" /> Dangerous Checkbox <br /> </c:catch> <c:if test = "${numberFormatException!= null}"> <p>The

This question already has an answer here: What is a NumberFormatException and how can I fix it? [duplicate] 9 answers Why does order matter when catching exceptions? 8 answers I really want to use features from Java-1.7. One of this feature is "Multi-Catch". Currently I have the following code try { int Id = Integer.parseInt(idstr); TypeInfo tempTypeInfo = getTypeInfo(String.valueOf(Id)); updateTotalCount(tempTypeInfo); } catch (NumberFormatException numExcp) { numExcp.printStackTrace(); } catch (Exception exception) { exception.printStackTrace(); } I want to remove the two catch blocks from

While trying to run Jar application using JWS (JNLP) launch. It has been giving me this error. Can't even find where is the mistake. Any directions would help. If someone could tell me where is the potential location of this error, I could find post that code here. java.lang.NumberFormatException: For input string: "\Tools_Dev\TestApp\dist" at java.lang.NumberFormatException.forInputString(Unknown Source) at java.lang.Integer.parseInt(Unknown Source) at java.lang.Integer.parseInt(Unknown Source) at com.sun.deploy.security.DeployManifestChecker.verifyCodebaseEx(Unknown Source) at com.sun.deploy