Not able to execute after sucessfull compilation

[nitude gupta]

Hi All,
I m getting this exception when I m trying to execute my java program
Exception in thread "main" java.lang.NoClassDefFoundError: Test (wrong name: Java/Te
st_java/Test)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: Test. Program will exit.

The problem is not with classpath I suppose as i am able to run a simple "Hello world" program...
any help on this....
TIA...

[Seetharaman Venkatasamy]

1.your Test class contain main method?
2. do you try to run the Test class with proper package name? example: java com.Test

[Anupam Jain]

Seetharaman Venkatasamy wrote:1.your Test class contain main method?
2. do you try to run the Test class with proper package name? example: java com.Test

Yeah
These two checks should solve your problem...
If not... please put here your code and the commands of how you are running it...

[nitude gupta]

DBConnection.java
This file is defined @ E:\Java\Test_java

package Java.Test_java;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;

public class DBConnection {
	private static String strDriver = "com.ibm.db2.jcc.DB2Driver"; 
	//LOCALHOST - 
	private static String strDestURL = "jdbc:db2://mchhabra-2:50000/DBLOCAL";
	private static String strDestUser = "Administrator";
	private static String strDestPwd = "cscindia@123";
	
	// DB2 Test
	private static String strURL = "##jdbc:db2://mvsprod.fbfs.com:5203/DB2T";
	private static String strUser = "e0c1235";
	private static String strPwd = "today02";
	
	// Read properties file.
	private static void readProperties()
	{
	    Properties properties = new Properties();
	    try {
	        properties.load(new java.io.FileInputStream("properties\\connection.properties"));
	        strDriver = properties.getProperty("strDriver");
	        
	        strDestURL = properties.getProperty("strDestURL");
		    strDestUser = properties.getProperty("strDestUser");
		    strDestPwd = properties.getProperty("strDestPwd");
		    
		    strURL = properties.getProperty("strURL");
		    strUser = properties.getProperty("strUser");
		    strPwd = properties.getProperty("strPwd");		    
	    } catch (IOException e) {
	    	System.out.println("Connection file not found");
	    }	    
	}
	
	public static java.sql.Statement getStatement()
	{
		readProperties();
		try {
			// load the DB2 Driver
	           Class.forName(strDriver);
	           // establish a connection to DB2
	           Connection db2Conn = 
	         DriverManager.getConnection
	             (strURL, strUser, strPwd);
	            // use a statement to gather data from the database
	            Statement st = db2Conn.createStatement();
	            return st;
	            
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			System.out.println(e.getMessage());
			return null;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			System.out.println(e.getMessage());
			return null;
		}

	}
	
	public static java.sql.Connection getConnection()
	{
		readProperties();
		try {
			// load the DB2 Driver
	           Class.forName(strDriver);
	           // establish a connection to DB2
	           Connection db2Conn = 
	         DriverManager.getConnection
	             (strURL, strUser, strPwd);
	            // use a statement to gather data from the database
	          return db2Conn;
	            
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			System.out.println(e.getMessage());
			return null;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			System.out.println(e.getMessage());
			return null;
		}

	}
	public static java.sql.Connection getDestConnection()
	{
		readProperties();
		try {
			// load the DB2 Driver
	           Class.forName(strDriver);
	           // establish a connection to DB2
	           Connection db2Conn = 
	         DriverManager.getConnection
	             (strDestURL, strDestUser, strDestPwd);
	            // use a statement to gather data from the database
	          return db2Conn;
	            
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			System.out.println(e.getMessage());
			return null;
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			System.out.println(e.getMessage());
			return null;
		}

	}
}

Test.java
This file is defined @ E:\Java\Test_java

package Java.Test_java;

import java.io.*;
import Java.Test_java.DBConnection ;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
//import java.util.ArrayList;
import java.lang.String;
import java.lang.StringBuffer;
import java.sql.ResultSet;
import java.util.Date;


public class Test 
{

	public static void main(String s[])
	{

		System.out.println("Hello World");
		Test t1 = new Test();
		t1.checkFileSize();
		t1.checkFacts();

	}

	public boolean checkFileSize(){
	File file = new File("c:/temp/trainer_code.txt");
    
	long byteSize = file.length();
	       
	// Divide by 1024 to get size in KB
	long  kbSize = byteSize / 1024;
	       
	System.out.println(byteSize + " bytes");
	System.out.println(kbSize + " KB");
	
	if(kbSize>10)
		return true;
	else
		return false;
	}

	public void checkFacts(){
		
		try {


		DBConnection db = new DBConnection();
		//Connection dbconn = db.getConnection();
		//Connection conn = Java.Test_java.DBConnection.getDestConnection();
		//Statement stmt = DBConnection.getStatement();
		//Statement st = conn.createStatement(ResultSet.TYPE_FORWARD_ONLY,ResultSet.CONCUR_READ_ONLY);                     
		
		StringBuffer queryFCT1 = new StringBuffer();
		queryFCT1.append( "SELECT COUNT(*) ");
		queryFCT1.append("FROM   pcrt_fact1 ");
		queryFCT1.append(" WHERE  i_time_key = (SELECT i_time_key ");
		queryFCT1.append("                     FROM   pcrt_time ");
		queryFCT1.append("                     WHERE  d_date == '' (f_report_monthly IS NOT NULL ");
		queryFCT1.append("                                          OR f_report_daily IS NOT NULL)) ");

		//ResultSet rs = stmt.executeQuery(queryFCT1.toString());
		//ResultSet rs = st.executeQuery(queryFCT1.toString());
		//System.out.println("ResultSet :" + rs );

		} catch (Exception e) {
            				System.err.println("Got an exception! ");
            				System.err.println(e.getMessage());
        				}


}
}

and I have defined connection.properties @ pkg "E:\Java\Test_java\properties"
I am compiling it using
E:\Java\Test_java>javac *.java

for executing this I am using

E:\Java\Test_java>java Java.Test_java.Test

and getting this err:

Exception in thread "main" java.lang.NoClassDefFoundError: Java/Test_java/Test
Caused by: java.lang.ClassNotFoundException: Java.Test_java.Test
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: Java.Test_java.Test. Program will exit.

[Seetharaman Venkatasamy]

E:\Java\Test_java>java Java.Test_java.Test 

The problem is here . execute the class file from outside the package. i.e from E directory itself.

E:\>java Java.Test_java.Test

by the way: Please have a look at Java naming conventions

[Anupam Jain]

Seetharaman Venkatasamy wrote:

E:\Java\Test_java>java Java.Test_java.Test 

The problem is here . execute the class file from outside the package. i.e from E directory itself.

E:\>java Java.Test_java.Test

by the way: Please have a look at Java naming conventions

correct solution... and yeah... a good look at the Java naming conventions is defibnitly required.

Also,
If there is some moderator listening right now... please delete one of my previous posts...
it got replicated because there was some network problem while I was posting it. I apologise for this...

[Campbell Ritchie]

Anupam Jain wrote:. . . If there is some moderator listening right now... please delete one of my previous posts...
it got replicated because there was some network problem while I was posting it. I apologise for this...

Done

[Anupam Jain]

Campbell Ritchie wrote:

Anupam Jain wrote:. . . If there is some moderator listening right now... please delete one of my previous posts...
it got replicated because there was some network problem while I was posting it. I apologise for this...

Done

thanks Ritchie..
That was really lightning quick...

[Campbell Ritchie]

You're welcome