Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/dao/QueryTimeoutException at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.<init>(SQLErrorCodeSQLExceptionTranslator.java:86) at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.<init>(SQLErrorCodeSQLExceptionTranslator.java:102) at org.springframework.jdbc.support.JdbcAccessor.getExceptionTranslator(JdbcAccessor.java:99) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:407) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:456) at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:464) at org.tarena.dao.JdbcEmpDAO1.findAll(JdbcEmpDAO1.java:16) at org.tarena.test.Test1.main(Test1.java:15) Caused by: java.lang.ClassNotFoundException: org.springframework.dao.QueryTimeoutException at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ... 8 more