java - Test if a class contains an instance variable based on its name

Question

Sometimes I need to test which class has declared some variable(s), is there another way how to test that, if concrete class contains variable with some name

try {
   testLocalVariable = (String) (this.getClass().getDeclaredField("testVariable").get(this));
} catch (NoSuchFieldException ex) {
} catch (SecurityException ex) {
} catch (IllegalArgumentException ex) {
} catch (IllegalAccessException ex) {
}

Answer 1

Classes have fields, not local variables.

You can use getDeclaredField() however this will not find fields declared by super classes.

You don't need lookup the fields value, if you don't get an exception the field is there.