错误总结：Exception in thread main java.lang.ExceptionInInitializerError

今天在理解工厂模式时出现了一个错误：

Exception in thread "main" java.lang.ExceptionInInitializerErrorat com.qyy.factory.UserAction.main(UserAction.java:11)Caused by: java.lang.NullPointerExceptionat java.util.Properties$LineReader.readLine(Properties.java:418)at java.util.Properties.load0(Properties.java:337)at java.util.Properties.load(Properties.java:325)at com.qyy.factory.getBean.<clinit>(getBean.java:16)... 1 more

原因：读取配置文件内容时，其中的配置文件的全限定名写错，这类名字或路径最好复制全限定名，尽量不要手写，不要过分相信不会出错，哈哈

//读取配置文件内容private static Properties pro = new Properties();static{//小括号的名字书写错误InputStream is = getBean.class.getResourceAsStream("/com/qyy/beas.properties");try {pro.load(is);} catch (IOException e) {e.printStackTrace();}}

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错误总结：Exception in thread main java.lang.ExceptionInInitializerError

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