- ★★Java質問･相談スレッド172★★ [転載禁止]©2ch.net
756 ：デフォルトの名無しさん[sage]：2015/04/01(水) 03:35:20.24 ID:uyRJR5DZ - public class SingletonTest {
private final int foo;
private static SingletonTest instance = null;
private SingletonTest(int foo) {
this.foo = foo; //←これ
}
public static SingletonTest newInstance(int foo) {
if (instance != null) throw new AlreadyExistedException("already existed");
return instance = new SingletonTest(foo);
}
public static SingletonTest getInstance() {
return (instance == null) ? newInstance(1) : instance;
}
}
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