谁见过这样的异常！并解决掉了，谢谢

childpp

org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer.<init>(Lorg/eclipse/jdt/internal/compiler/env/IBinaryTypeV
at net.sf.jasperreports.engine.design.JRJdtCompiler$1.findType(
JRJdtCompiler.java:245)
    at net.sf.jasperreports.engine.design.JRJdtCompiler$1.findType(
JRJdtCompiler.java:214)
    at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.askForType
(LookupEnvironment.java:119)
    at org.eclipse.jdt.internal.compiler.lookup.PackageBinding.getType(
PackageBinding.java:126)
    at org.eclipse.jdt.internal.compiler.lookup.Scope.findType(Scope.java
:1355)
    at org.eclipse.jdt.internal.compiler.lookup.Scope.getTypeOrPackage(
Scope.java:2472)
    at org.eclipse.jdt.internal.compiler.lookup.Scope.getType(Scope.java
:2194)
    at
org.eclipse.jdt.internal.compiler.ast.SingleTypeReference.getTypeBinding(
SingleTypeReference.java:39)
    at org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveType(
TypeReference.java:141)
    at org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveSuperType(
TypeReference.java:104)
    at org.eclipse.jdt.internal.compiler.lookup.ClassScope.findSupertype(
ClassScope.java:1107)
    at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectSuperclass
(ClassScope.java:767)
    at
org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectTypeHierarchy(
ClassScope.java:947)
    at
org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.connectTypeHierarchy
(CompilationUnitScope.java:266)
    at
org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.completeTypeBindings
(LookupEnvironment.java:195)
    at org.eclipse.jdt.internal.compiler.Compiler.beginToCompile(
Compiler.java:301)
    at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:315)
    at net.sf.jasperreports.engine.design.JRJdtCompiler.compileClass(
JRJdtCompiler.java:402)
    at net.sf.jasperreports.engine.design.JRJdtCompiler.compileReport(
JRJdtCompiler.java:119)
    at net.sf.jasperreports.engine.design.JRDefaultCompiler.compileReport(
JRDefaultCompiler.java:105)
    at net.sf.jasperreports.engine.JasperCompileManager.compileReport(
JasperCompileManager.java:211)
    at br.com.rededental.util.jasperreports.JasperServlet.service(
JasperServlet.java:92)