匿名内部类、成员类与局部类

来源：互联网发布：centos安装ant 编辑：程序博客网时间：2024/05/01 02:48

今天看代码，看到几个概念：内部类、局部类、成员类、静态成员类、匿名内部类；瞬间有种被搞糊涂了感觉。下面是一个小例子来对它们进行说明：

public class ClassTest{    public static void main(String[] args) {        ClassTest son = new ClassTest();                //测试匿名类        son.testAnonymous(new AnonymousClass() {            @Override            public void test() {                System.out.println("1 -> " + this.getClass().isMemberClass());                System.out.println("1 -> " + this.getClass().isAnonymousClass());                System.out.println("1 -> " + this.getClass().isLocalClass());                System.out.println("---------------------------------------");            }        });                //测试成员类        son.testMember();                //测试静态成员类        new StaticMemberClass();                //测试局部类        class LocalClass{            public LocalClass(){                System.out.println("4 -> " + this.getClass().isMemberClass());                System.out.println("4 -> " + this.getClass().isAnonymousClass());                System.out.println("4 -> " + this.getClass().isLocalClass());                System.out.println("---------------------------------------");            }        }        new LocalClass();    }    private void testAnonymous(AnonymousClass inner) {        inner.test();    }        private void testMember() {        new MemberClass();    }        /**     * 接口，用于测试内部类     * @author xinghzhang     *     */    interface AnonymousClass{        public void test();    }        /**     * 静态成员类     * @author xinghzhang     *     */    static class StaticMemberClass{        public StaticMemberClass() {            System.out.println("3 -> " + this.getClass().isMemberClass());            System.out.println("3 -> " + this.getClass().isAnonymousClass());            System.out.println("3 -> " + this.getClass().isLocalClass());            System.out.println("---------------------------------------");        }    }    /**     * 成员类     * @author xinghzhang     *     */    class MemberClass{        public MemberClass() {            System.out.println("2 -> " + this.getClass().isMemberClass());            System.out.println("2 -> " + this.getClass().isAnonymousClass());            System.out.println("2 -> " + this.getClass().isLocalClass());            System.out.println("---------------------------------------");        }    }}

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