java.lang.Object
java.lang.runtime.ObjectMethods
Bootstrap methods for state-driven implementations of core methods,
 including 
Object.equals(Object), Object.hashCode(), and
 Object.toString().  These methods may be used, for example, by
 Java compiler implementations to implement the bodies of Object
 methods for record classes.- Since:
- 16
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Method SummaryModifier and TypeMethodDescriptionstatic Objectbootstrap(MethodHandles.Lookup lookup, String methodName, TypeDescriptor type, Class<?> recordClass, String names, MethodHandle... getters) Bootstrap method to generate theObject.equals(Object),Object.hashCode(), andObject.toString()methods, based on a description of the component names and accessor methods, for eitherinvokedynamiccall sites or dynamic constant pool entries.
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Method Details- 
bootstrappublic static Object bootstrap(MethodHandles.Lookup lookup, String methodName, TypeDescriptor type, Class<?> recordClass, String names, MethodHandle... getters) throws Throwable Bootstrap method to generate theObject.equals(Object),Object.hashCode(), andObject.toString()methods, based on a description of the component names and accessor methods, for eitherinvokedynamiccall sites or dynamic constant pool entries. For more detail on the semantics of the generated methods see the specification ofRecord.equals(Object),Record.hashCode()andRecord.toString().- Parameters:
- lookup- Every bootstrap method is expected to have a- lookupwhich usually represents a lookup context with the accessibility privileges of the caller. This is because- invokedynamiccall sites always provide a- lookupto the corresponding bootstrap method, but this method just ignores the- lookupparameter
- methodName- the name of the method to generate, which must be one of- "equals",- "hashCode", or- "toString"
- type- a- MethodTypecorresponding the descriptor type for the method, which must correspond to the descriptor for the corresponding- Objectmethod, if linking an- invokedynamiccall site, or the constant- MethodHandle.class, if linking a dynamic constant
- recordClass- the record class hosting the record components
- names- the list of component names, joined into a string separated by ";", or the empty string if there are no components. This parameter is ignored if the- methodNameparameter is- "equals"or- "hashCode"
- getters- method handles for the accessor methods for the components
- Returns:
- a call site if invoked by indy, or a method handle if invoked by a condy
- Throws:
- IllegalArgumentException- if the bootstrap arguments are invalid or inconsistent
- NullPointerException- if any argument is- nullor if any element in the- gettersarray is- null
- Throwable- if any exception is thrown during call site construction
 
 
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