记录一些 Java 反射基础知识
准备测试 Bean
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| package reflectiontest.bean;
public class TestUser {
private String name;
private int age;
public String gender;
}
|
getFields VS getDeclaredFields
getFields 只会返回 public 类型的 fields, getDeclaredFields 会返回所有类型的 fieds
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| @Test
public void get_class_field() {
Field[] fields = TestUser.class.getFields();
System.out.println("Output of getFields...");
for (Field f : fields) {
System.out.println(f);
}
System.out.println("\n");
Field[] declareFields = TestUser.class.getDeclaredFields();
System.out.println("Output of getDeclaredFields...");
for (Field f : declareFields) {
System.out.println(f);
}
}
|