package jp.yucchi.privatemethodonjava9interface;\n\n\/**\n *\n * @author Yucchi\n *\/\n@FunctionalInterface\npublic interface Eat {\n\n default void eatOnDefault() {\n eatStrawberryCake();\n eatTiramisuCake();\n eatCheeseCake();\n eatChocolateCake();\n }\n\n void eatStrawberryCake();\n\n private void eatTiramisuCake() {\n System.out.println("I ate tiramisu cake.");\n oneMoreCake("TiramisuCake");\n }\n\n private void eatCheeseCake() {\n System.out.println("I ate cheese cake.");\n oneMoreCake("cheese cake");\n }\n\n private static void eatChocolateCake() {\n System.out.println("I ate chocolate cake.");\n\/\/ It is not possible to refer to a non-static method oneMoreCake(java.lang.String) from a static context.\n\/\/ oneMoreCake("chocolate cake");\n }\n\n \/\/ \u30b3\u30fc\u30c9\u5171\u6709\u3092\u5fc5\u8981\u3068\u3059\u308b\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308b\u5834\u5408\u306b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30e1\u30bd\u30c3\u30c9\u304c\u4f7f\u3048\u308b\u3068\n \/\/ \u5b9f\u88c5\u3092\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u5185\u306b\u96a0\u853d\u3067\u304d\u308b\u3002\n private void oneMoreCake(String cake) {\n System.out.println("I will eat another " + cake + ".");\n }\n\n}<\/pre>\n<\/div>\n <\/p>\n
\npackage jp.yucchi.privatemethodonjava9interface;\n\n\/**\n *\n * @author Yucchi\n *\/\npublic class PrivateMethodOnJava9Interface {\n\n public static void main(String[] args) {\n\n final Eat eat = new Eat() {\n\n @Override\n public void eatStrawberryCake() {\n System.out.println("I ate strawberry cake. It was very delicious.");\n }\n\n \/\/ Private methods on the interface can not be overridden.\n\/\/ @Override\n private void eatTiramisuCake() {\n System.out.println("I ate tiramisu cake. It was very delicious.");\n }\n\n \/\/ Private methods on the interface can not be overridden.\n\/\/ @Override \n private void eatCheeseCake() {\n System.out.println("I ate cheese cake. It was very delicious.");\n }\n\n \/\/ Private static methods on the interface can not be overridden.\n\/\/ @Override\n private void eatChocolateCake() {\n System.out.println("I ate chocolate cake. It was very delicious.");\n }\n\n };\n\n eat.eatOnDefault();\n\n\/\/ eat.eatTiramisuCake(); \/\/ eatTiramisuCake() is accessed private by jp.yucchi.privatemethodonjava 9interface.Eat\n\/\/ eat.eatCheeseCake(); \/\/ eatCheeseCake() is accessed private by jp.yucchi.privatemethodonjava 9interface.Eat\n\/\/ Eat.eatChocolateCake(); \/\/ eatChocolateCake() is accessed private by jp.yucchi.privatemethodonjava 9interface.Eat\n\n }\n\n}<\/pre>\n<\/div>\n\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u7d50\u679c\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
I ate strawberry cake. It was very delicious.
I ate tiramisu cake.
I will eat another TiramisuCake.
I ate cheese cake.
I will eat another cheese cake.
I ate chocolate cake.<\/p>\n
Java SE 9 \u3067\u306f\u3053\u306e\u3088\u3046\u306a\u5c0f\u3055\u306a\u6539\u826f\u304c\u305f\u304f\u3055\u3093\u3042\u308b\u3088\u3046\u3067\u3059\u3002(^_^)<\/p>\n
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