[Java] Reflection 筆記

@SuppressWarnings("unused")
Object obj = new Object() {
    String id = "123";
    public String name = "Jax";
};

Class<?> cl = obj.getClass();

for (Field field : cl.getFields()) {
    System.out.printf("%s = %s {%s}\n",
        field.getName(), field.get(obj), field.getType());
}

System.out.println("=======================");

for (Field field : cl.getDeclaredFields()) {
    System.out.printf("%s = %s {%s}\n",
        field.getName(), field.get(obj), field.getType());
}

Output:

name = Jax {class java.lang.String}
=======================
id = 123 {class java.lang.String}
name = Jax {class java.lang.String}