1.RuntimeException public class RuntimeException { public static void main(String[] args) { // TODO Auto-generated method stub String str="; int temp=Integer.parseInt(str); System.out.println(temp*temp); } } 查看parseInt方法的源代码如下: public static int pars…

In Java, there are two types of exceptions: checked exceptions and un-checked exceptions. A checked exception must be handled explicitly by the code, whereas, an un-checked exception does not need to be explicitly handled. For checked exceptions, you…

设置MaxPermSize大小TOMCAT_HOME/bin/catalina.bat 文件头加set JAVA_OPTS='-Xms512m -Xmx1024m -XX:MaxPermSize=512m'…

若有 java.lang.RuntimeException和 java.lang.NullPointerException: Attempt to invoke virtual method 'void android.一起的异常报错, 很大几率是因为控件实列写错了,好好检查R.id.xx有没有写错, 多次的粗心大意犯的同样的错误,以此记录.…

今天学习Android开发突然遇到了这个问题,查阅了很多资料,并且对集中原因进行了分析. 错误信息字符串:java.lang.RuntimeException: Unable to start activity ComponentInfo{com.first/com.first.Game}: java.lang.NullPointerException 一般都会在Activity  onCreate()方法里的setContentView(XXX)发生此错误,网上查阅了很多原因,大概有四种重要可…

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'daoSupport': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name…

是在reduce阶段报的错误,详细错误信息是 朱传豪 19:04:48 Diagnostic Messages for this Task: Error: java.lang.RuntimeException: Error in configuring object at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:109) at org.apache.hadoop.util.ReflectionU…

QA:java.lang.RuntimeException:java.io.FileNotFoundException:Resource nexus-maven-repository-index.properties does not exist.…

java.lang.RuntimeException: Invalid action class configuration that references an unknown class named [xxxAction]. 在使用SSH进行项目开发时,一不小心就可能出现以上的错误提示.现总结论坛高人的开发经验针对本错误产生的原因做具体分析,希望能帮到出同样问题的各位童鞋们: 这样的问题可以简单理解为未找到名字为XXX的action 最近在用extjs进行开发,有一个组合框,confiden…

错误详情: java.lang.RuntimeException: No application id has been found. at org.eclipse.equinox.internal.app.EclipseAppContainer.startDefaultApp(EclipseAppContainer.java:242) at org.eclipse.equinox.internal.app.MainApplicationLauncher.run(MainApplicationL…