JAVA判断修饰符的方法(比如static,final)

留笔备忘...
虽然有时会用到,每次都忘记是哪个函数了...汗
直接上代码:

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

public class Test {
    abstract class FieldTest {
        private String str;
        private static final int CONSTANTS = 1;

        public abstract void test();
    }

    public static void main(String[] args) {
        Field[] fields = FieldTest.class.getDeclaredFields();

        for(Field field : fields) {
            System.out.println(field.getName() + " -> static:" + Modifier.isStatic(field.getModifiers()) + " final:" + Modifier.isFinal(field.getModifiers()));
        }

        Method[] methods = FieldTest.class.getDeclaredMethods();

        for(Method method : methods) {
            System.out.println(method.getName() + " -> abstract:" + Modifier.isAbstract(method.getModifiers()));
        }
    }
}

主要就是 Modifier.isXXXX()函数及field/method .getModifiers()函数就可以判断类/接口/字段/方法的修饰符

贴部分Modifer类的定义:

    /**
     * The <code>int</code> value representing the <code>public</code>
     * modifier.
     */
    public static final int PUBLIC           = 0x00000001;

    /**
     * The <code>int</code> value representing the <code>private</code>
     * modifier.
     */
    public static final int PRIVATE          = 0x00000002;

    /**
     * The <code>int</code> value representing the <code>protected</code>
     * modifier.
     */
    public static final int PROTECTED        = 0x00000004;

    /**
     * The <code>int</code> value representing the <code>static</code>
     * modifier.
     */
    public static final int STATIC           = 0x00000008;

......

其中的判断函数:

public static boolean isStatic(int mod) {
return (mod & STATIC) != 0;
}

摘自 SoL 学习无止境

补充：软件开发 , Java ,