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    Thrown to indicate that a method has been passed an illegal or inappropriate argument. Make sure your getter and setter methods have the same return/parameter types (that is, String for String, Integer for Integer).

Solutions on the web

via Coderanch by mandlar suurla, 1 year ago
Can not set int field DesignerSwingTest.number to java.lang.Class
via coderanch.com by Unknown author, 2 years ago
Can not set int field DesignerSwingTest.number to java.lang.Class
via Stack Overflow by Unknown author, 2 years ago
Can not set int field Point.x to scala.runtime.BoxedUnit
via Stack Overflow by Tiago Veloso
, 1 year ago
Can not set int field DataStructures.StackAr.topOfStack to java.lang.Integer
via Stack Overflow by Scott Barnes
, 2 years ago
Can not set java.util.Map field RenderManager.entityRenderMap to java.util.HashMap
via Stack Overflow by ramsbh
, 1 year ago
Can not set java.lang.String field com.cat.ilc.web.entities.IlcLeadTime.ident to java.lang.String
java.lang.IllegalArgumentException: Can not set int field DesignerSwingTest.number to java.lang.Class	at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)	at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)	at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(Unknown Source)	at sun.reflect.UnsafeIntegerFieldAccessorImpl.getInt(Unknown Source)	at java.lang.reflect.Field.getInt(Unknown Source)	at Reflection.main(Reflection.java:89)