Baby names for Java classes?

A silly thought just occurred to me. Wouldn't it be
great to have a dictionary of baby names for java
classes? I sometimes have a hard time coming up with
a name for a new class. You know, something other
r than Foo. Be great if I could just look up some
suggestions for the kind of thing I'm doing...okay
back to work.What? I'd rather have a name which is related to what the class does. It doesn't make sense to call e.g. a Date class Jim.
Kaj - not a class

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Call Specs for Java Classes

I have loaded some interdependent java classes in Oracle
successfully, Not sure about how to write call specs for
these as one method of class A needs an object of class B as
input parameter.
TIA
PM

A silly thought just occurred to me. Wouldn't it be
great to have a dictionary of baby names for java
classes? I sometimes have a hard time coming up with
a name for a new class. You know, something other
r than Foo. Be great if I could just look up some
suggestions for the kind of thing I'm doing...okay
back to work.What? I'd rather have a name which is related to what the class does. It doesn't make sense to call e.g. a Date class Jim.
Kaj - not a class

Get the relative path for java class

How to get Relative path for java class which is inside in web-inf directory in webapps

ajay.manchu wrote:
Hi gimbal2,
My Requirement is i need to run a java class from batch file,when i created batch file in that i need to mention the complete path of the java class,so instead of mentioning that i want to provide only java class name,thats why i asked that one..
can u help me regarding that....
Thanks in advanceI wonder how that would work then. Let's take a fictive example. You have a class com.mycompany.myapp.Foo. This would mean that the class is stored in some directory like this:
c:/webrootdir/myapp/WEB-INF/classes/com/mycompany/myapp/Foo.classTo be able to run such a class from the commandline using Java, you would have to invoke this command:
java -cp c:/webrootdir/myapp/WEB-INF/classes com.mycompany.myapp.FooHow would knowing the exact path to this class help you?

How to specify relative path for file name in java class

I have a directory structure like this.
C:\Aurora\com\optemys\aurora\validation
I have a class Test.java under the validation folder.
I have various files under the same folder i.e validation.
If I want to access the file "test.properties" in Test.java, how can I just specify "test.properties" & not "C:\Aurora\com\optemys\aurora\validation\test.properties".
I dont want to hardcode any file path into the class. How can I specify the relative file name into the class.
Thanks In Advance
Sachin

switch the name in Test.properties and use
this.getClass().getResourceAsStream(fileName)

How to get fully qualified name for a class with just the class name

I want to get the fully qualified name of the class at runtime. The only piece of information which I have is the class name.
I want to create a runtime instance of a class with the class name [Just the class name].
Is there is any way to achieve this using ClassLoader?
Could anyone suggest me an idea?
Cheers,
Vinn.

Nope. If you are given "List", will you decide that means "java.util.List" or "java.awt.List"? Of course you could prompt the user to make the decision for you, I suppose. But using a class loader isn't going to make the task any easier.

{@inheritDoc} not working for Java Classes

Hello,
i am using {@inheritDoc} for inherting super class's JavaDoc for a perticular function..
It is working, if super class is my own class. i am able to see all JavaDoc in child class.
But when i use {@inheritDoc} for extending JavaDoc of java class it is not working.
i.e. if i am writing {@inheritDoc} in public void actionPerformed(ActionEvent e) method..
It wont show any javadoc..
How to add it? Do i need to give source of java classes too???
And if it is Yes, then where to specifiy. and where to find source of Java classes, do they come with JDK? or NetBeans?? (If yes then where it is in JDK or Netbeans???)
Thanks,
Nachiket.

Yes, you need to have the Java source, with the -sourcepath option, as described here:
Inheriting Comments from J2SE - Your code can also automatically inherit comments from interfaces and classes in the J2SE. You can do this by unzipping the src.zip file that ships with the SDK (it does not contain all source files, however), and add its path to -sourcepath. When javadoc runs on your code, it will load the doc comments from those source files as needed. For example, if a class in your code implements java.lang.Comparable, the compareTo(Object) method you implement will inherit the doc comment from java.lang.Comparable.
http://java.sun.com/j2se/javadoc/faq/#incrementalbuild
If you want the full Java source get it from here:
http://www.sun.com/software/communitysource/j2se/java2/index.xml
http://java.sun.com/j2se/javadoc/faq/#sourcecode
-Doug

Looking for java class

Hi everyone!
I'm new to java programming and looking for a java class called
JPlot2D.
I have a java application that needs this class to run and i'm using netbeans v3.6 to write the programme. Please if anyone can help ,do it quickly.

sorry, one last test
http://forum.java.sun.com/thread.jspa?threadID=55
8245&messageID=32322 26
Nice try, but Sun improved that one out of existence too.

Table name for Batch Class type

Hello Sap Gurus,
Could Any one tell me the name of table for Batch creation header data and item data.
Table names for Stock Transfer order ,header data and Item data
Points will be rewarded
Thanks
Edie
Edited by: Edie Edie on Jan 1, 2008 7:33 PM

MCHP (batch record)
EKKO (order header)
EKPO (order item)
AUUMI (worklist for stock transfer order)

Dll for java classes

Hi,
is it possible to create a .dll having some java classes?
thanks.

JNI example
CNI docs
You then do stuff like (in C++):
java::util::Hashtable *ht = new java::util::Hashtable(120);Mmm, Why is JNI soo stinky in comparision. :)

Xdk for java class generation exception

Has anyone seen the following/know how to avoid it?
When I use oracg -d store_data.dtd, I am receiving the following
exception:
C:\Jim\config>oracg -d store_data.dtd
Error: DTD Class Generator failed to generate classes.
java.lang.SecurityException: sealing violation
Any help would be appreciated.
jim

Jinyu,
I guess the next release will need to be waited for as I have
not been able to get you to respond to my questions.
In the meantime, I'll have to use Sun's JAXB as I know it will
generate the classes I want.
jim
PS: I am still available to work through this with you, but I
need to move forward.

Classpath for java class for Business Operation

I am running wls 7.0 with wli on Solaris.
I am running studio on my developemt w2k pc and connectioning to my unix wls.
I want to define a business operation using my FCV.class. Where should I put the
class (pc or server) and where do I need to append my classpath information ?

Business operations can only access classes from the application and extension
classpath. This is a WLI limitation.
Giora
"Davidson Hutton" <[email protected]> wrote:
>
I am running wls 7.0 with wli on Solaris.
I am running studio on my developemt w2k pc and connectioning to my unix
wls.
I want to define a business operation using my FCV.class. Where should
I put the
class (pc or server) and where do I need to append my classpath information

Java class names which contain unicode characters

I need to create, compile and load java classes which have class names that contain unicode characters.
I am using Win2k but will neet to support unix* in future.
When I try to create a fooXbar.jar where X is a unicode character which is not ascii I get an error when creating the file.
My question is: how do I map java class names and package names which contain non ascii characters into
names that the files systems will like AND that the java VM will use when trying to load .class file from the class path.
for example what would the .java and .class file be for the following class?
class \u6587\u66f8 {

You could make names for .java and .class that is understandable by the filesystem. E.g. you could prepend with % and then digits for the unicode character. The problem is then how to compile the class, and how to load the class.
You can load the class with a custom classloader, which will translate the unicode class name to the escaped file name (using %).
The problem is then reduced to how you can compile your code (you have to map the file name to the class name somehow). I think it can be done, but I don't know the solution to that.
Alternatively you can use meaningful names for the classes, and then make an obfuscator that can change the bytecodes so the classnames are changed to some obscure unicode names. Perhaps there is already obfuscators out there you can use that will use unicode characters.

Jar file name Required for IApplicationPropertiesService class file

Hi
I am using EP6 SP15, Please let me know the jar file name for IApplicationPropertiesService.class
Regards
Ganesan S

Hi,
you should have it in your NWDS plugins directory. I have it here:
<i>\Program Files\SAP\JDT\eclipse\plugins\com.sap.km.rfwizard\lib\bc.rf.global.service.appproperties_api.jar</i>
Romano
PS: you can try to find it yourself - not so hard: just search in the filesystem for XXXXXX.class including searching archives...

How to find the location of java class files at runtime?

Does anyonw have an idea how to get the file name of a java class given the binary name?
I mean how can I get the file name for my class myPackage.myClass?
I am looking for a function which takes "myPackage.myClass" as input and returns
"c:\\javaprojects\\myPackage\\myClass.class".
I tried to do it with the LassLoader class but it did not work. Does anyone have an idea if the Java core API already has a function which does that?
Thanks, Bernhard

Hi ,
It is a simple SAMPLE code , you think and build a logics to handle all classes.
Try this sample, It doesn't handle the inner classes you put logic to handle the logics for inner classes.
The inner class format is it contains the character $ in the File location but inside the code you put "." instedad of "$" you to find out or put trials.
package pkg1;
import java.io.* ;
import java.util.* ;
import java.util.zip.* ;
public class ClsB {
     private static Vector clsPaths ;
     public static Vector getPaths() {
          if( clsPaths == null ) {
               String paths = System.getProperty( "java.class.path" ) ;
               // In linux or solarise use the following
               // StringTokenizer st = new StringTokenizer( paths , ":\n" ) ;
               StringTokenizer st = new StringTokenizer( paths , ";\n" ) ;
               clsPaths = new Vector() ;
               while( st.hasMoreTokens() ) {
                    String path = st.nextToken() ;
                    File f = new File( path ) ;
                    if( f.exists() ) {
                         try {
                              f = f.getCanonicalFile() ;
                              clsPaths.add( f ) ;
                         }catch( IOException ioe ) { }
          return clsPaths ;
     public static String findClassPath( String fullClassName ) {
          Vector v = getPaths() ;
          for( int i = 0 ; i < v.size() ; i++ ) {
               File f = ( File ) v.get( i ) ;
               String path = findIn( f , fullClassName ) ;
               if( path != null )
                    return path ;
          return null ;
     static boolean isJar( File jar ) {
          if( jar.isDirectory() )
               return false ;
          try {
               ZipFile zf = new ZipFile( jar ) ;
               return true ;
          } catch ( ZipException ze ) {
               // It is not a jar file
               // you handle this
          } catch ( IOException ioe ) {
               ioe.printStackTrace() ;
          return false ;
     static String findIn( File dirOrJar , String clsName ) {
          if( isJar( dirOrJar ) ) {
               // It is something different because the class inside the jar file
               // Simply I return the jar file location and the entry name ,
               // but you put action what you want
               if( isInsideJar( dirOrJar , clsName ) ) {
                    // All archieve file using the path separator is '/'
                    return dirOrJar.getPath() + "!" + clsName.replace( '.' , '/' ) + ".class" ;
          } else {
               File f = new File( dirOrJar , clsName.replace( '.' , File.separatorChar ) + ".class" ) ;
               if( f.exists() ) {
                    return f.getPath() ;
          return null ;
     static boolean isInsideJar( File jar , String clsName ) {
          try {
               ZipFile zf = new ZipFile( jar ) ;
               // All archieve file using the path separator is '/'
               ZipEntry ze = zf.getEntry( clsName.replace( '.' , '/' ) + ".class" );
               return ( ze != null ) ;
          } catch ( ZipException ze ) {
               ze.printStackTrace() ;
          } catch ( IOException ioe ) {
               ioe.printStackTrace() ;
          return false ;
     public static void main(String[] args) {
          System.out.println( findClassPath( "pkg1.ClsB" ) );
          System.out.println( findClassPath( "pkg1.pkg2.ClsA" ) );
}

Sql type to Java class?

I want to write a utility class to generate a java source file (bean) from out of the metadata of a database table. the metadata returns the column type as a java.sql.Types constant (int value). now, i want to map these int values to Java classes. (e.g. Types.INT => java.lang.Integer). Is there already such a method in the API or do i have to write my own switch ... case Types.INT ... result = Integer.class ... method?

well, i wrote my own utility method to generate such beans:
     * Convert SQL type code to corresponding Java class.
     * @param sqlType One of java.sql.Types.xxx.
     * @return Class that corresponds to the given type.
    public static Class toClass(int sqlType) {
        Class result = null;
        switch (sqlType) {
        case Types.BIGINT :
        case Types.INTEGER :
        case Types.SMALLINT :
        case Types.TINYINT :
            result = Integer.class;
            break;
        case Types.BIT :
        case Types.BOOLEAN :
            result = Boolean.class;
            break;
        case Types.CHAR :
            result = Character.class;
            break;
        case Types.DATE :
        case Types.TIMESTAMP :
            result = java.util.Date.class;
            break;
        case Types.DECIMAL :
        case Types.DOUBLE :
        case Types.FLOAT :
            result = BigDecimal.class;
            break;
        case Types.NULL :
            result = null;
            break;
        case Types.LONGVARCHAR :
        case Types.VARCHAR :
        default :
            result = String.class;
            break;
        return result;
    }//toClass()
     * Create a Java bean (source file) to map a database table. The class name is the table name, the bean
     * properties are the table columns. Each column will result in a property with a corresponding set() and
     * get() method.
     * @param connection Database connection to load table from.
     * @param schema Schema to get tables for.
     * @param tableName Name of table to create the bean for.
     * @param className Name of Java class to create.
     * @param fileName Name of Java source file to create.
     * @throws SQLException, IOException
    public static void createTableBean(Connection connection, String schema, String tableName, String className, String fileName)
            throws SQLException, IOException {
        if (connection != null && tableName != null && fileName != null) {
            //read table columns:
            DatabaseMetaData dmd = connection.getMetaData();
            ResultSet resultSet = dmd.getColumns(null, "%", tableName, null);
            Properties props = new Properties();
            if (resultSet != null) {
                while (resultSet.next()) { //for each table
                    String name = resultSet.getString("COLUMN_NAME");
                    int type = resultSet.getInt("DATA_TYPE");
                    props.setProperty(name, ""+type);
                }//next table
            }//else: resultSet unavailable
            //create source file:
            File file = new File(fileName);
            StringBuffer sb = new StringBuffer();
            sb.append("/* $Header:$ */\n");
            sb.append("package TODO;\n\n");
            sb.append("/**\n");
            sb.append(" * Container class to store data of one record (row) of table '"+tableName+"'.\n");
            sb.append(" *\n");
            sb.append(" * @version $Revision:$ ($Date:$)\n");
            sb.append(" * @author $Author:$\n");
            sb.append(" */\n");
            sb.append("public class ");
            sb.append(className);
            sb.append(" {\n\n");
            Enumeration enum = props.keys();
            StringBuffer sb2 = new StringBuffer(); //methods
            StringBuffer sb3 = new StringBuffer(); //toString()
            while (enum.hasMoreElements()) {
                String columnName = (String) enum.nextElement();
                //change first character of column name to lower case:
                String fieldName = columnName.substring(0, 1).toLowerCase() + columnName.substring(1);
                String stype = props.getProperty(columnName, ""+Types.VARCHAR);
                int type = (new Integer(stype)).intValue();
                Class javaClass = toClass(type);
                String typeName = "String"; //default
                if (javaClass != null) {
                    String javaClassName = javaClass.getName();
                    int lastDot = javaClassName.lastIndexOf('.');
                    if (lastDot >= 0) {
                        typeName = javaClassName.substring(lastDot + 1);
                //field:
                sb.append("    /** ");
                sb.append(columnName);
                sb.append(" */\n");
                sb.append("    private ");
                sb.append(typeName);
                sb.append(" ");
                sb.append(fieldName);
                sb.append(" = null;\n");
                //toString() method:
                sb3.append("        sb.append(\",");
                sb3.append(fieldName);
                sb3.append("=\");\n");
                sb3.append("        sb.append(");
                sb3.append(fieldName);
                sb3.append(");\n");
                //set method:
                sb2.append("    /**\n");
                sb2.append("     * Set ");
                sb2.append(columnName);
                sb2.append(".\n     *\n     * @param value ");
                sb2.append(columnName);
                sb2.append(" to set.\n");
                sb2.append("     */\n");
                sb2.append("    public void set");
                sb2.append(columnName);
                sb2.append("(");
                sb2.append(typeName);
                sb2.append(" value) {\n        ");
                sb2.append(fieldName);
                sb2.append(" = value;\n    }\n\n");
                //get method:
                sb2.append("    /**\n");
                sb2.append("     * Get ");
                sb2.append(columnName);
                sb2.append(".\n     *\n     * @return ");
                sb2.append(columnName);
                sb2.append(".\n     */\n");
                sb2.append("    public ");
                sb2.append(typeName);
                sb2.append(" get");
                sb2.append(columnName);
                sb2.append("() {\n");
                sb2.append("        return ");
                sb2.append(fieldName);
                sb2.append(";\n    }\n\n");
            }//next column
            sb.append("\n\n");
            sb.append(sb2.toString()); //methods
            //overwrite toString() method:
            sb.append("    /**\n");
            sb.append("     * Overwrite super.\n");
            sb.append("     *\n     * @return String representation of the object.\n");
            sb.append("     */\n");
            sb.append("    public String toString() {\n");
            sb.append("        StringBuffer sb = new StringBuffer(super.toString());\n\n");
            sb.append(sb3.toString());
            sb.append("\n        return sb.toString();\n");
            sb.append("    }\n\n");
            sb.append("}//"+className);
            //write to file:
            String text = sb.toString();
            BufferedWriter bw = null;
            try {
                bw = new BufferedWriter(new FileWriter(file));
                bw.write(text, 0, text.length());
            } finally {
                if (bw != null) {
                    try { bw.close(); } catch (IOException ioe) { /* ignore */ }
        }//else: input unavailable
    }//createTableBean()

Baby names for Java classes?

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