Class.forname Syntax Error
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Loading The Driver Using Class.forname Is Not Mandatory
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community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Issues with Class.forName in Java code using Eclipse IDE up vote 0 down vote favorite I am using Eclipse IDE Version: Helios Service Release 2 and JDK version 1.6. I have SQL Server which among the following is not a jdbc statement 2008 installed on my system. I have downloaded Microsoft JDBC driver and included the path of the jar file in Eclipse IDE-> Project Properties->Java build Path-> Libraries -> Add External jars. I have written this piece of code for database connection: package com.ucs.test; import java.sql.*; public class ConnectDatabase { Connection DBconnection = null; String dbName = "silkopenview"; String userName = "SilkTestAdmin"; String password = "Nbv12345"; Class.forName(drivername); DBconnection = DriverManager.getConnection(dbName,userName,password); } But I get the following errors: Syntax error on token "DBconnection", VariableDeclaratorId expected after this token Syntax error on token "drivername", VariableDeclaratorId expected after this token Syntax error on token(s), misplaced construct(s) I am new to Java and Eclipse IDE. Please help me in correcting this errors. A quick help is appreciated. java eclipse database-connection share|improve this question asked Aug 31 '12 at 12:18 Diya 831213 add a comment| 4 Answers 4 active oldest votes up vote 0 down vote accepted Class.forName(drivername); DBconnection = DriverManager.getConnection(dbName,userName,password); You
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Business Learn more about hiring developers or posting ads with us Stack Overflow Questions what happens if you call the method close() on a resultset object Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million how can you retrieve information from a resultset programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Java Class.forName method java.lang.ClassNotFoundException; up vote 2 down vote favorite I've found other thread where people had and solved this error; http://stackoverflow.com/questions/12215230/issues-with-class-forname-in-java-code-using-eclipse-ide however, all of were NOT using fully qualified class paths. I cannot seem to get Class.forName to work and I am using fully qualified paths. I've tested compiling from CLI and using ItelliJ Idea. Both fail with the same error. Code (in test directory): package test; public class Test { public static void main(String[] args) { Class cls = Class.forName("java.util.ArrayList"); } } Error: java.lang.ClassNotFoundException; must be caught or declared to be thrown The example http://stackoverflow.com/questions/22433096/java-class-forname-method-java-lang-classnotfoundexception above does NOT work. Thanks in advance! java class classnotfoundexception classnotfound share|improve this question asked Mar 16 '14 at 4:51 webish 3218 add a comment| 4 Answers 4 active oldest votes up vote 4 down vote accepted You're getting this message because ClassNotFoundException is a checked exception. This means that this exception can not be ignored. You need to either surround it with a try/catch construct and provide exception handling or add a throws clause to your method and handle it in a callee. EDIT: Please note that Class.forName() construct is not resolved during compilation. When you write such a statement, you're telling the JVM to look during program execution for a class which may not have been loaded. Java libraries are dynamically linked instead of statically linked, meaning that their code is not incorporated in your program code, being loaded only when requested. This is why it throws ClassNotFoundException. share|improve this answer edited Mar 16 '14 at 5:00 answered Mar 16 '14 at 4:55 Mauren 1,5271025 What I'm concerned with is why the Class.forName() method has a thrown exception in the first place... –webish Mar 16 '14 at 4:57 @webish because when you use Class.forName(), you ask the JVM to look inside loaded classes for a name, which is not guaranteed to be loaded
Java.lang - Character Java.lang - Character.Subset Java.lang - Character.UnicodeBlock Java.lang - Class Java.lang - ClassLoader Java.lang https://www.tutorialspoint.com/java/lang/class_forname.htm - Compiler Java.lang - Double Java.lang - Enum Java.lang - Float Java.lang - InheritableThreadLocal Java.lang - Integer Java.lang - Long Java.lang - Math http://jtds.sourceforge.net/faq.html Java.lang - Number Java.lang - Object Java.lang - Package Java.lang - Process Java.lang - ProcessBuilder Java.lang - Runtime Java.lang - RuntimePermission Java.lang - SecurityManager is not Java.lang - Short Java.lang - StackTraceElement Java.lang - StrictMath Java.lang - String Java.lang - StringBuffer Java.lang - StringBuilder Java.lang - System Java.lang - Thread Java.lang - ThreadGroup Java.lang - ThreadLocal Java.lang - Throwable Java.lang - Void Java.lang Package extras Java.lang - Interfaces Java.lang - Errors Java.lang - Exceptions if the jdbc Java.lang Package Useful Resources Java.lang - Useful Resources Java.lang - Discussion Selected Reading Developer's Best Practices Questions and Answers Effective Resume Writing HR Interview Questions Computer Glossary Who is Who Java.lang.Class.forName(String className) Method Advertisements Previous Page Next Page Description The java.lang.Class.forName(String className) method returns the Class object associated with the class or interface with the given string name. Declaration Following is the declaration for java.lang.Class.forName() method public static Class> forName(String className) throws ClassNotFoundException Parameters className -- This is the fully qualified name of the desired class. Return Value This method returns the Class object for the class with the specified name. Exception LinkageError -- if the linkage fails. ExceptionInInitializerError -- if the initialization provoked by this method fails. ClassNotFoundException -- if the class cannot be located. Example The following example shows the usage of java.lang.Class.forName() method. package com.tutorialspoint; import java.
implementations? What is the URL format used by jTDS? jTDS is supposed to be the fastest JDBC driver around. Have you got any figures to prove that? Or even better, a benchmark I can run myself? Which JDBC features are and which features are not supported by jTDS? Can jTDS be used in a multi threaded application? Error Conditions Why do I get a ClassNotFoundError when calling Class.forName("net.sourceforge.jtds.jdbc.Driver")? Why do I get a java.sql.SQLException: "No suitable driver" when trying to get a connection? Why do I get java.sql.SQLException: "Network error IOException: Connection refused: connect" when trying to get a connection? Where does one place an instance name in the connect string? Connecting with "jdbc:jtds:sqlserver://host\instance:port/database" gives an SQLException with the message "Logon failed". Why do I get a java.sql.SQLException: "Unable to get information from SQL Server" when trying to connect to an SQL Server instance? I was hoping that appending ";domain=X" to the URL would be enough on a workstation that was already logged into domain X. Why do I still need to provide a username and password? executeQuery() throws java.sql.SQLException: "The executeQuery method must return a result set.". I get java.sql.SQLException: "ResultSet may only be accessed in a forward direction" or "ResultSet is read only" when using a scrollable and/or updateable ResultSet. Not all SQLExceptions thrown by jTDS seem to have associated meaningful SQL state values. Batch processing with executeBatch() hangs or is unreliable on Sybase. Incorrect Behavior CallableStatement output parameter getter throws java.sql.SQLException: "Parameter X has not been set.". PreparedStatement.executeUpdate() returns an incorrect update count. Why do I get java.sql.SQLException: "Output parameter not allowed as argument list prevents use of RPC." when calling a stored procedure? Memory Usage Memory usage keeps increasing when using generated PreparedStatements. TDS Protocol Version I'm trying to connect to SQL Server 6.5, but it hangs when calling getConnection(). Why do column names more than 30 cha