sub.java

import java.util.Scanner;


public class Sub {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		int number1=(int)(Math.random()*10);
		int number2=(int)(Math.random()*10);
		if(number1<number2){
			int temp=number1;
			number1=number2;
			number2=temp;
			
		}
		System.out.print
		("what is "+number1+"-"+number2+"?");
		Scanner input=new Scanner (System.in);
		int answer =input.nextInt();
		if(number1-number2==answer)
			System.out.println("You are correct!");
		else 
			System.out.println("YOU answer is wrong\n"+number1+"-"+number2+"should be"+(number1-number2));
		
			
			
		// TODO Auto-generated method stub

	}

}

2025-06-06 17:29:00 ERROR [BScreenConsumerSubTask.Thread-38] - Collector consumer topic data has error, msg is java.lang.NullPointerException at org.smartloli.kafka.eagle.core.factory.KafkaServiceImpl.parseBrokerServer(KafkaServiceImpl.java:505) at org.smartloli.kafka.eagle.core.factory.KafkaServiceImpl.getKafkaConsumer(KafkaServiceImpl.java:634) at org.smartloli.kafka.eagle.web.quartz.shard.task.sub.BScreenConsumerSubTask.bscreenConsumerTopicStats(BScreenConsumerSubTask.java:101) at org.smartloli.kafka.eagle.web.quartz.shard.task.sub.BScreenConsumerSubTask.metricsConsumerTopicQuartz(BScreenConsumerSubTask.java:69) at org.smartloli.kafka.eagle.web.quartz.shard.task.sub.BScreenConsumerSubTask.run(BScreenConsumerSubTask.java:64) at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:91)2025-06-06 17:29:00 ERROR [ProducerLogSizeStatsSubTask.Thread-34] - Collector topic logsize has error, msg is java.lang.NullPointerException at java.util.ArrayList.addAll(ArrayList.java:581) at org.smartloli.kafka.eagle.core.factory.v2.BrokerServiceImpl.topicList(BrokerServiceImpl.java:370) at org.smartloli.kafka.eagle.web.quartz.shard.task.sub.ProducerLogSizeStatsSubTask.topicProducerLogSizeStats(ProducerLogSizeStatsSubTask.java:72) at org.smartloli.kafka.eagle.web.quartz.shard.task.sub.ProducerLogSizeStatsSubTask.run(ProducerLogSizeStatsSubTask.java:53) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:441) at com.sun.proxy.$Proxy14.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:224) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:147) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:80) at org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:145) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:86) at com.sun.proxy.$Proxy21.getAllAlarmClusterTasks(Unknown Source) at org.smartloli.kafka.eagle.web.service.impl.AlertServiceImpl.getAllAlarmClusterTasks(AlertServiceImpl.java:253) at org.smartloli.kafka.eagle.web.quartz.shard.task.sub.AlertClusterSubTask$Cluster.cluster(AlertClusterSubTask.java:46) at org.smartloli.kafka.eagle.web.quartz.shard.task.sub.AlertClusterSubTask.run(AlertClusterSubTask.java:39) Caused by: java.sql.SQLSyntaxErrorException: Table 'ke.ke_alarm_clusters' doesn't exist at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:120) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:953) at com.mysql.cj.jdbc.ClientPreparedStatement.execute(ClientPreparedStatement.java:370) at com.alibaba.druid.filter.FilterChainImpl.preparedStatement_execute(FilterChainImpl.java:3446) at com.alibaba.druid.filter.FilterEventAdapter.preparedStatement_execute(FilterEventAdapter.java:434) at com.alibaba.druid.filter.FilterChainImpl.preparedStatement_execute(FilterChainImpl.java:3444) at com.alibaba.druid.proxy.jdbc.PreparedStatementProxyImpl.execute(PreparedStatementProxyImpl.java:152) at com.alibaba.druid.pool.DruidPooledPreparedStatement.execute(DruidPooledPreparedStatement.java:483) at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:64) at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79) at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63) at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:325) at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109) at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:89) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:151) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:145) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:427) ... 10 more报错
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