java 之匿名内部类

java 之匿名内部类

/**
 * java 之匿名内部类
 * mybatis３中动态sql语句的生成用到了．
 * @see http://mybatis.github.io/mybatis-3/statement-builders.html
 * @author doctor
 *
 * @time 2015年3月9日 上午8:56:15
 */
public class AnonymousInnerClassCode {
    public static void main(String[] args) {
        String simpleClass = new SimpleClass(){{
            setName("doctor");
            setAge(2000);
        }}.toString();

        System.out.println(simpleClass);

        //map匿名内部类
        Map<String, String> map = new HashMap<String, String>(){{
            put("name", "doctor who");
            put("age", "200");
        }};

        System.out.println(map);
    }

    private static class SimpleClass{
        private StringBuilder stringBuilder = new StringBuilder();

        public SimpleClass setName(String name){
            stringBuilder.append(" name:" + name);
            return this;
        }

        public SimpleClass setAge(int age){
            stringBuilder.append(" age:" + age);
            return this;
        }

        @Override
        public String toString() {
            return stringBuilder.toString();
        }


    }
}