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  1. ,

    You try to parse a String that contains non-numeric characters to an int. The string must contain decimal characters only, optionally beginning with a + or - sign.

  2. ,

    Can occur when you try to convert a String to a numeric value but the String is not well formatted for the conversion.

Solutions on the web

via GitHub by damithc
, 1 year ago
java.lang.NumberFormatException: For input string: "ag"
via GitHub by damithc
, 10 months ago
javax.crypto.IllegalBlockSizeException: Input length must be multiple of 16 when decrypting with padded cipher
java.lang.NumberFormatException: For input string: "ag"	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)	at java.lang.Integer.parseInt(Integer.java:492)	at teammates.common.util.StringHelper.hexStringToByteArray(StringHelper.java:326)	at teammates.common.util.StringHelper.decrypt(StringHelper.java:144)	at teammates.storage.api.StudentsDb.getStudentForRegistrationKey(StudentsDb.java:189)	at teammates.logic.core.StudentsLogic.getStudentForRegistrationKey(StudentsLogic.java:100)	at teammates.logic.api.Logic.getStudentForRegistrationKey(Logic.java:908)	at teammates.ui.controller.Action.authenticateNotLoggedInUser(Action.java:175)	at teammates.ui.controller.Action.authenticateAndGetActualUser(Action.java:119)	at teammates.ui.controller.Action.authenticateUser(Action.java:100)	at teammates.ui.controller.Action.init(Action.java:83)	at teammates.ui.controller.ActionFactory.getAction(ActionFactory.java:148)	at teammates.ui.controller.ControllerServlet.doPost(ControllerServlet.java:62)	at teammates.ui.controller.ControllerServlet.doGet(ControllerServlet.java:43)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)	at teammates.storage.datastore.DatastoreFilter.doFilter(DatastoreFilter.java:29)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)	at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:125)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)	at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:37)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)	at com.google.apphosting.utils.servlet.JdbcMySqlConnectionCleanupFilter.doFilter(JdbcMySqlConnectionCleanupFilter.java:60)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)	at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:50)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)	at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:260)	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)	at org.mortbay.jetty.Server.handle(Server.java:326)	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)	at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:78)	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)	at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:148)	at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:504)	at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:446)	at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:453)	at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:276)	at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:312)	at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:304)	at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:450)	at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:235)	at java.lang.Thread.run(Thread.java:745)