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LinkageError
  public
  
  
  
  class
  LinkageError
  
  
  
  
  
  
  
    extends Error
  
  
  
  
  
  
  
    
      | 
          Known direct subclasses
          
  
  
    
  
  
    
      
        | BootstrapMethodError | Thrown to indicate that an invokedynamicinstruction or a dynamic
 constant failed to resolve its bootstrap method and arguments,
 or forinvokedynamicinstruction the bootstrap method has failed to
 provide a
 call site with a
 target
 of the correct method type,
 or for a dynamic constant the bootstrap method has failed to provide a
 constant value of the required type. |  
        | ClassCircularityError | Thrown when the Java Virtual Machine detects a circularity in the
 superclass hierarchy of a class being loaded. |  
        | ClassFormatError | Thrown when the Java Virtual Machine attempts to read a class
 file and determines that the file is malformed or otherwise cannot
 be interpreted as a class file. |  
        | ExceptionInInitializerError | Signals that an unexpected exception has occurred in a static initializer. |  
        | IncompatibleClassChangeError | Thrown when an incompatible class change has occurred to some class
 definition. |  
        | NoClassDefFoundError | Thrown if the Java Virtual Machine or a ClassLoaderinstance
 tries to load in the definition of a class (as part of a normal method call
 or as part of creating a new instance using thenewexpression)
 and no definition of the class could be found. |  
        | UnsatisfiedLinkError | Thrown if the Java Virtual Machine cannot find an appropriate
 native-language definition of a method declared native. |  
        | VerifyError | Thrown when the "verifier" detects that a class file,
 though well formed, contains some sort of internal inconsistency
 or security problem. |  | 
  
  
  
  
    
      | 
          Known indirect subclasses
          
  
  
    
  
  
    
      
        | AbstractMethodError | Thrown when an application tries to call an abstract method. |  
        | GenericSignatureFormatError | Thrown when a syntactically malformed signature attribute is
 encountered by a reflective method that needs to interpret the
 generic signature information for a type, method or constructor. |  
        | IllegalAccessError | Thrown if an application attempts to access or modify a field, or
 to call a method that it does not have access to. |  
        | InstantiationError | Thrown when an application tries to use the Java newconstruct to instantiate an abstract class or an interface. |  
        | NoSuchFieldError | Thrown if an application tries to access or modify a specified
 field of an object, and that object no longer has that field. |  
        | NoSuchMethodError | Thrown if an application tries to call a specified method of a
 class (either static or instance), and that class no longer has a
 definition of that method. |  
        | UnsupportedClassVersionError | Thrown when the Java Virtual Machine attempts to read a class
 file and determines that the major and minor version numbers
 in the file are not supported. |  | 
  
    
  Subclasses of LinkageError indicate that a class has
 some dependency on another class; however, the latter class has
 incompatibly changed after the compilation of the former class.
Summary
| Inherited methods | 
|---|
|  | 
| 
    From class
      
        
          java.lang.Object
        
      
      
  
  
  
    | 
        
        
        
        
        
        Object | 
      clone()
      Creates and returns a copy of this object.
        
    
 |  
  
  
    | 
        
        
        
        
        
        boolean | 
      equals(Object obj)
      Indicates whether some other object is "equal to" this one.
        
    
 |  
  
  
    | 
        
        
        
        
        
        void | 
      finalize()
      Called by the garbage collector on an object when garbage collection
 determines that there are no more references to the object.
        
    
 |  
  
  
    | 
        
        
        
        final
        
        Class<?> | 
      getClass()
      Returns the runtime class of this Object. |  
  
  
    | 
        
        
        
        
        
        int | 
      hashCode()
      Returns a hash code value for the object.
        
    
 |  
  
  
    | 
        
        
        
        final
        
        void | 
      notify()
      Wakes up a single thread that is waiting on this object's
 monitor.
        
    
 |  
  
  
    | 
        
        
        
        final
        
        void | 
      notifyAll()
      Wakes up all threads that are waiting on this object's monitor.
        
    
 |  
  
  
    | 
        
        
        
        
        
        String | 
      toString()
      Returns a string representation of the object.
        
    
 |  
  
  
    | 
        
        
        
        final
        
        void | 
      wait(long timeoutMillis, int nanos)
      Causes the current thread to wait until it is awakened, typically
 by being notified or interrupted, or until a
 certain amount of real time has elapsed.
        
    
 |  
  
  
    | 
        
        
        
        final
        
        void | 
      wait(long timeoutMillis)
      Causes the current thread to wait until it is awakened, typically
 by being notified or interrupted, or until a
 certain amount of real time has elapsed.
        
    
 |  
  
  
    | 
        
        
        
        final
        
        void | 
      wait()
      Causes the current thread to wait until it is awakened, typically
 by being notified or interrupted.
        
    
 |  | 
Public constructors
    LinkageError
    
public LinkageError ()
    
    
    
  Constructs a LinkageError with no detail message.
 
    LinkageError
    
public LinkageError (String s)
    
    
    
  Constructs a LinkageError with the specified detail
 message.
    
    | Parameters | 
|---|
      
        | s | String: the detail message. | 
    
 
    LinkageError
    
public LinkageError (String s, 
                Throwable cause)
    
    
    
  Constructs a LinkageError with the specified detail
 message and cause.
    
    
    | Parameters | 
|---|
      
        | s | String: the detail message. | 
      
        | cause | Throwable: the cause, may benull | 
    
 
 
 
  
  
    
  
 
  
    
      
      
    
    
      
    
    
  
       
    
    
      
    
  
  
  Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
  Last updated 2025-02-10 UTC.
  
  
  
    
      [[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[]]