Sun JDK 1.5 annotation compile error

Sun JDK 1.5 compiler BUG： JDK-6302954 : Inference fails for type variable return constraint

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6302954

编译报错如下：

type parameters of <T>T cannot be determined; no unique maximal instance exists for type variable T with upper bounds

 

 

 @SuppressWarnings("unchecked")
  public static <T> T readField(Field field, Object target, boolean forceAccess)
      throws IllegalAccessException {
    if (field == null) {
      throw new IllegalArgumentException("The field must not be null");
    }
    if (forceAccess && !field.isAccessible()) {
      field.setAccessible(true);
    } else {
      setAccessibleWorkaround(field);
    }
    return (T) field.get(target);
  }

 

public static <T> T readField(Field field, Object target)
      throws IllegalAccessException {
    return FieldUtils.readField(field, target, false);  //这里编译报错
  }

 

 

   修正代码：

 

 

public static <T> T readField(Field field, Object target)
      throws IllegalAccessException {
    return FieldUtils.<T> readField(field, target, false);
  }

 

 

    FieldUtils.<T> readField(field, target, false)