NoClassDefFoundError (Java SE 17 & JDK 17)
Description: declaration: module: java.base, package: java.lang, class: NoClassDefFoundError
Keywords: java.lang.NoClassDefFoundError class

Module java.base
Package java.lang

# Class NoClassDefFoundError

java.lang.Object
java.lang.Throwable
java.lang.Error
java.lang.LinkageError
java.lang.NoClassDefFoundError

All Implemented Interfaces:
  `Serializable`

public class NoClassDefFoundError extends LinkageError
Thrown if the Java Virtual Machine or a `ClassLoader` instance 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 the `new` expression) and no definition of the class could be found.

The searched-for class definition existed when the currently executing class was compiled, but the definition can no longer be found.

Since:
  1.0
See Also:
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `NoClassDefFoundError()`
  Constructs a `NoClassDefFoundError` with no detail message.
  `NoClassDefFoundError(String s)`
  Constructs a `NoClassDefFoundError` with the specified detail message.

- ## Method Summary

  ### Methods declared in class java.lang.Throwable

  `addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString`

  ### Methods declared in class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- ## Constructor Details

  - ### NoClassDefFoundError

    public NoClassDefFoundError()
    Constructs a `NoClassDefFoundError` with no detail message.

  - ### NoClassDefFoundError

    public NoClassDefFoundError(String s)
    Constructs a `NoClassDefFoundError` with the specified detail message.
    Parameters:
      `s` - the detail message.