public class HttpMethods {
//在访问HttpMethods时创建单例
private static class SingletonHolder{
private static final HttpMethods INSTANCE = new HttpMethods();
}
//获取单例
public static HttpMethods getInstance(){
return SingletonHolder.INSTANCE;
}
}
Java 静态内部类的写法
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转载自blog.csdn.net/wolfking0608/article/details/83542247
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