framework/tests/all-systems/FieldAccessTest.java

// The test cases GenericNull, FieldAccessTest, and InferTypeArgs often fail together.
// See the comments at GenericNull for some tips about what might be wrong.

public class FieldAccessTest {
  class MyClass {

    Object field = new Object();
  }

  class MyException extends RuntimeException {
    Object field = new Object();
  }

  class MyExceptionA extends MyException {}

  class MyExceptionB extends MyException {}

  @SuppressWarnings("nullness")
  class MyGen<T extends MyClass> {
    T myClass = null;
  }

  void test(Object o, MyGen raw) {
    // Raw type field access:
    raw.myClass.field = new Object();

    // Intersection type field access
    Object a = ((MyClass & Cloneable) o).field;
    try {
    } catch (MyExceptionA | MyExceptionB ex) {
      // Union type field access
      ex.field = new Object();
    }
  }

  void classLiterals() {
    Class<?> c = byte.class;
    Class<?> d = void.class;
  }
}