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Main.java
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60 lines (50 loc) · 1.55 KB
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package ModifierReflection;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.Map;
public class Main {
private static final Integer MAX = 5;
public static void main(String[] args) {
// Class<?> clazz = HashMap.class;
Class<?> clazz = Map.class;
int modifier = clazz.getModifiers();
// Class abstract/interface/static
if (Modifier.isAbstract(modifier)) {
System.out.println("Class is abstract");
} else if (Modifier.isInterface(modifier)) {
System.out.println("Class is interface");
} else if (Modifier.isStatic(modifier)) {
System.out.println("Class is static");
}
// Class access modifier
if (Modifier.isPrivate(modifier)) {
System.out.println("Access modifier is final");
} else if (Modifier.isPublic(modifier)) {
System.out.println("Access modifier is public");
} else if (Modifier.isProtected(modifier)) {
System.out.println("Access modifier is protected");
} else {
System.out.println("Access modifier is package-private");
}
checkFieldModifier();
}
static void checkFieldModifier() {
Field[] fields = Main.class.getDeclaredFields();
for (Field field : fields) {
System.out.println(field.getName());
int mdf = field.getModifiers();
if (Modifier.isStatic(mdf)) {
System.out.println("Field is static.");
}
if (Modifier.isPublic(mdf)) {
System.out.println("Field is public.");
}
if (Modifier.isPrivate(mdf)) {
System.out.println("Field is private.");
}
if (Modifier.isTransient(mdf)) {
System.out.println("Field is transient.");
}
}
}
}