Inspectopedia 2024.3 Help

MethodHandle/VarHandle type mismatch

Reports MethodHandle and VarHandle factory method calls that don't match any method or field.

Also reports arguments to MethodHandle.invoke() and similar methods, that don't match the MethodHandle signature and arguments to VarHandle.set() that don't match the VarHandle type.

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

JavaLangInvokeHandleSignature
Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Reflective access

Examples:

MethodHandle mh = MethodHandles.lookup().findVirtual( MyClass.class, "foo", MethodType.methodType(void.class, int.class)); // the argument should be an int value mh.invoke(myObj, "abc");

// the argument should be String .class VarHandle vh = MethodHandles.lookup().findVarHandle( MyClass.class, "text", int .class);

VarHandle vh = MethodHandles.lookup().findVarHandle( MyClass.class, "text", String.class); // the argument should be a String value vh.set(myObj, 42);

New in 2017.2

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Java, 243.23126

Last modified: 03 December 2024