Raj chiru

Hi Friends,

I'm getting confusion about join() internal implementation in Thread class. please advise.

Thread.java
public final synchronized void join(long millis) throws InterruptedException { long base = System.currentTimeMillis(); long now = 0; if (millis < 0) { throw new IllegalArgumentException("timeout value is negative"); } if (millis == 0) { while (isAlive()) { wait(0); } } else { while (isAlive()) { long delay = millis - now; if (delay <= 0) { break; } wait(delay); now = System.currentTimeMillis() - base; } } } public final void join() throws InterruptedException { join(0); }

My Code 1:

Thread t = new Thread(new MessageLoop()); t.setName("Thread-1 without join method"); t.start(); // loop until MessageLoop // thread exits while (t.isAlive()) { //t.join(); synchronized (t) { try{ t.wait(); }catch(Exception e){ } } }
My Code 2 :

Thread t = new Thread(new MessageLoop()); t.setName("Thread-2 with Join Method"); t.start(); // loop until MessageLoop // thread exits while (t.isAlive()) { t.join(); }

Here i'm getting same results with My Code 1 and My Code 2 but Question is, if we call join() OR wait() method on Thread instance,How it will get notify,when thread in wait state here as i couldn't see any notify() OR notifyAll() method in Thread class.

Hi friends,

I'm reading "Design Patterns: Elements of Reusable Object-Oriented Software" book
in that i red below statements.

But class inheritance has some disadvantages, too. First, you can't change the implementations inherited from parent classes at run-time, because inheritance is defined
at compile-time. Second, and generally worse, parent classes often define at least part of their subclasses' physical representation.Because inheritance exposes a subclass to details of its parent's implementation, it's often said that "inheritance breaks encapsulation"[ Sny86] .
The implementation of a subclass becomes so bound up with the implementation of its parent class that any change in the parent's implementation will
force the subclass to change.

Please explain how inheritance exposes a subclass to details of its parent's implementation? and it mean?

Dear Friends,


I would want to take online training for Java Web Services,please suggest me which is best site for online training center.

Thanks.

Jasper..Thank you

Then,if it doesn't have anything to do with Byte Order,
How do we know How many positions to shift the byte value in multi byte order.

you mean..This is the procedure/functionality you will have to consider the byte order or Endian in which multibyte numbers are stored?

Campbell..Thank you

Still I'm not able to getting,
How do we know How many positions to shift the byte value(ex: 0x1d<<0x18)?

Thanks.

Hi Friends,

And I red some document,In below example why we need multify value with 256.(or with shift operators)
and why need this functionality?

In the example above, the value 50,0000,007, in hexadecimal, is 0x1DCD6507. And if we break it up into four separate bytes, the byte values are 0x1D, 0xCD, 0x65, and 0x07. In decimal those four bytes are (respectively) 29, 205, 101, and 7. The biggest byte is The First One, 29, Which Represents The Value 29 * 256 * 256 * 256 = 486539264. The second biggest is The Second Byte, 205, Which Represents The Value 205 * 256 * 256 = 13434880. The Third Biggest Byte Is 101, Which Represents The Value 101 * 256 = 25856, and the littlest byte is 7, which represents the value 7 * 1 = 7. The values 486539264 + 13434880 + 25856 + 7 = 500,000,007.


Thanks.

I have a directory where a lot of files are saved Like

Template_ Batch120408.txt, Template_ Batch120409.txt, Template_ Batch120410.txt, Template_ Batch120411.txt, Template_ Batch120412.txt, Template_ Batch120413.txt, Batch120408.txt, Batch120409.txt, Batch120410.txt, Batch120411.txt, Batch120412.txt, Batch120413.txt,

Currently there is a task which lists the files from directory and find the machingTemplate_ Batch file corresponding Batch120413 file(Batch120413.txt==>Template_ Batch120413.txt) from list and processes them sequentially (writing to a database). Due to the increasing number of files it is necessary to implement parallel processing of these files. Can you give me some ideas and a code example in java, please?

Hi friends,
when i execute below queries i will Object type value in list object with same value Object type(same Object type in all five indexes in arraylist object),
How to get PortalMenuModel type object in list with differnt values?

List<PortalMenuModel> menuInfo = getHibernateTemplate().findByNamedParam("from com.mobily.loyalty.model.PortalMenuModel as menu where menu.menuId=:MENUID", "MENUID", menuId);
Query menuQuery = session.createQuery("from com.mobily.loyalty.model.PortalMenuModel as menu where menu.menuId=:MENUID"); menuQuery.setParameter("MENUID", menuId); List <PortalMenuModel> list = menuQuery.list();

Hi Friends,

I'm new to webservices,I'm trying to create webservice client using Apache CXF with eclipse but i'm getting error like
Loading FrontEnd jaxws ... Loading DataBinding jaxb ... Exception in thread "main" java.lang.AbstractMethodError: org.apache.crimson.tree.ElementNode.getTextContent()Ljava/lang/String; at org.apache.cxf.tools.common.toolspec.parser.Option.isInEnumArgumentValue(Option.java:196) at org.apache.cxf.tools.common.toolspec.parser.Option.readArgumentValue(Option.java:151) at org.apache.cxf.tools.common.toolspec.parser.Option.accept(Option.java:121) at org.apache.cxf.tools.common.toolspec.parser.OptionGroup.accept(OptionGroup.java:62) at org.apache.cxf.tools.common.toolspec.parser.Form.accept(Form.java:99) at org.apache.cxf.tools.common.toolspec.parser.CommandLineParser.parseArguments(CommandLineParser.java:173) at org.apache.cxf.tools.common.toolspec.AbstractToolContainer.parseCommandLine(AbstractToolContainer.java:89) at org.apache.cxf.tools.common.toolspec.AbstractToolContainer.execute(AbstractToolContainer.java:178) at org.apache.cxf.tools.common.AbstractCXFToolContainer.execute(AbstractCXFToolContainer.java:72) at org.apache.cxf.tools.wsdlto.WSDLToJavaContainer.execute(WSDLToJavaContainer.java:284) at org.apache.cxf.tools.common.toolspec.ToolRunner.runTool(ToolRunner.java:103) at org.apache.cxf.tools.wsdlto.WSDLToJava.run(WSDLToJava.java:113) at org.apache.cxf.tools.wsdlto.WSDLToJava.run(WSDLToJava.java:86) at org.apache.cxf.tools.wsdlto.WSDLToJava.main(WSDLToJava.java:184)

Any solution for this query?

Hi Friends,
we are developing spring based we application,but Basic Requriements

1. A jsp apge to isnert the following into table
2. A jsp page to view the following based on ID or all if no ID is provided
3. based on data source id , get or execute SOL string from table and and display the results query results in view

For this i created spring controller,domain(POJO) object and dao object

I need your help how to get or execute SOL string and and display the results query results in jsp view based on data source id?

DROP TABLE ODB_US_DS_CFG;

CREATE TABLE ODB_US_DS_CFG ( ID INTEGER GENERATED BY DEFAULT AS IDENTITY(START WITH 1, INCREMENT BY 1) PRIMARY KEY, NAME VARCHAR(256), REFRESH_RATE INTEGER, DS_DRIVER VARCHAR(256), HOST VARCHAR(256), PORT INTEGER, SID VARCHAR(256), USERNAME VARCHAR(256), PASSWORD VARCHAR(256), [b]SQL_STRING VARCHAR(512)[/b] )


Insert into ODB_US_DS_CFG (ID, NAME, INTERVAL, DS_DRIVER, HOST, PORT, USERNAME, PASSWORD, SQL, SID) Values (1, 'AR POLL STATUS', 60, 'jdbc: oracle:thin:', '10.14.11.100', '1522', 'cdfdba', 'cdfdba', 'select * From dual', 'emadev');

Hi Friends,

what are the draw backs if i use JSP as a controller for handling the requests and responses and using java code,scriptlets,declarations and expressions in jsp?

Hi Friends,
Can you please explain to me from which language the preceding code was developed?
Is it Python(or Jpython) language?

$nogen<<<$$DBTYPE:=<<<$$$xattr(globaloptions,dbtype,value)>>>>>> // $$fg : targeting $$DBTYPE // Copyright (C) 2009 sunn Computing Inc. // All Rights Reserved $$noemptylines<<< $$nogen<<< $$FGCLASS:=<<<$$fg>>> $$FGTABLE:=<<<$$fgattr(tablefg)>>> $$TABLE:=<<<$$fgattr(table)>>> $$ifequal($$$xattr(globaloptions,use_uc_expr,value),y)<<< $$UC_XPR:=<<<y>>> >>>else<<< $$EUC_SUF:=<<<$$ifequal($$$xattr(globaloptions,use_euc,value),y)<<<_UC>>>>>> >>> $$ifnexists($$$fgattr(chghist-disable))<<< $$CHGHIST:=<<<Y>>> $$ifexists($$$fgattr(chghist-nocreateaction))<<< $$ifexists($$$fgattr(chghist-nodeleteateaction))<<< $$ifexists($$$fgattr(chghist-nochangeateaction))<<< $$delete($$CHGHIST) >>> >>> >>> >>> $$ifexists($$$CHGHIST)<<< $$CH_CAT:=<<<$$$fgattr(chghist-category)>>> $$ifblank($$CH_CAT)<<<$$CH_CAT:=<<<$$TABLE>>> >>> $$ifexists($$$fgattr(chghist-subcategory))<<< $$CH_SUBCAT:=<<<$$fgattr(chghist-subcategory)>>> >>>else<<< $$CH_SUBCAT:=<<<$$ifnequal($$CH_CAT,$$TABLE)<<<$$TABLE>>>>>> >>> >>> $$JPRIMTYPES:=<<<byte char int long float double boolean>>> $$NUMFLDS:=<<<0>>> $$setfg($$FGTABLE) $$ALLFLDS:=<<<$$flds>>> $$PRIKEY:=<<<$$$fgsbycat($$FGTABLE $$FGCLASS,primarykey)>>> $$SECKEYS:=<<<$$$fgsbycat($$FGTABLE $$FGCLASS,secondarykey)>>> $$KEYS:=<<<$$PRIKEY $$SECKEYS >>> $$PKFLDS:=<<<$$$flds($$PRIKEY)>>> $$FORKEYS:=<<<$$$fgsbycat($$FGTABLE $$FGCLASS,foreignkey)>>> $$RQFLDS:=<<<>>> $$ifexists($$$UC_XPR $$$EUC_SUF)<<< $$$foreachfg($$FGTABLE,$$KEYS)<<<$$$foreachfld($$fg)<<< $$ifequal($$$fldattr(extraUC),y)<<<$$ifequal($$fldattr(javatype),String)<<<$$(CIS_$$fld):=<<<y>>>>>>>>> >>>>>> >>> $$ifexists($$$EUC_SUF)<<<\ $$EUCFLDS:=<<<$$$foreachfld($$FGTABLE)<<<$$ifexists($$$(CIS_$$fld))<<<$$fld >>>>>>>>>\ >>> $$NPKFLDS:=<<<\ $$foreachfld($$FGTABLE)<<<\ $$ifnotin($$fld,$$PKFLDS)<<<\ $$fld\ >>>\ >>>\ >>> $$foreachfld($$FGTABLE)<<<\ $$$ifequal($$$fldattr(encrypt),y)<<< $$ifnequal($$fldattr(javatype),String)<<<$$error("Encryption supported only for Strings")>>> $$ifexists($$$fldattr(dims))<<<$$error("Encryption of arrays ($$fld) not supported")>>> $$(CPREF_$$fld):=<<<enc_>>> >>> $$(JV$$fld):=<<<$$ifexists($$$fldattr(dims))<<<a>>>$$fldattr(javaprefix)$$fld>>> $$(JTYP$$fld):=<<<$$fldattr(javatype)>>> $$(FIDX$$fld):=<<<$$index>>> $$ifexists($$$fldattr(dims))<<< $$DIMS:=<<<$$split($$fldattr(dims),",","")>>> $$(AS_$$fld):=<<<$$foreachstr($$DIMS)<<<[]>>>>>> $$(JINIT$$fld):=<<<>>> $$HASARRAY:=<<<y>>> >>>else<<< $$(JINIT$$fld):=<<<$$ifnequal($$fldattr(default),null)<<< = $$fldattr(default)>>>>>> >>> $$ifexists($$$(CIS_$$fld))<<< $$ifexists($$$EUC_SUF)<<< $$(UCMAX_$$fld):=<<<$$ifexists($$$fldattr(maxlength))<<<$$fldattr(maxlength)>>>else<<<0>>>>>> $$(HASUC_$$fld):=<<<y>>> $$(ICNAME_$$fld):=<<<$$fld$$EUC_SUF>>> >>>else<<< $$(ICNAME_$$fld):=<<<upper($$fld)>>> $$UCXPRS:=<<<y>>> >>> >>>else<<< $$(ICNAME_$$fld):=<<<$$fld>>> >>> $$ifnequal($$fldattr(base),Serial)<<< $$ifexists($$$fldattr(reqd))<<< $$RQFLDS:=<<<$$RQFLDS $$fld>>> >>>else<<< $$ifisin($$fld,$$PKFLDS)<<< $$ifnequal($$(JTYP$$fld),String)<<< $$RQFLDS:=<<<$$RQFLDS $$fld>>> >>> >>> >>> >>> $$ifexists($$$fldattr(valmethod))<<<$$HASVALMETH:=<<<y>>>>>> $$ifnequal($$fld,ChgTS)<<< $$ifisin($$fldattr(javatype),$$JPRIMTYPES)<<<$$HASPDF:=<<<y>>>>>> >>> $$ifequal($$fldattr(base),Serial)<<< $$ifexists($$$SERIAL_FIELD)<<<$$error("Table has more than one Serial field")>>> $$SERIAL_FIELD:=<<<$$fld>>> >>> $$ifexists($$$fldattr(descr-name))<<<$$HASDSCRNAMES:=<<<y>>>>>> >>> $$CHIDFG:=<<<$$$fgsbycat(chg_hist_ident)>>> $$ifexists($$$CHGHIST)<<< $$S:=<<<>>> $$CHAKEY:=<<<$$foreachfld($$PRIKEY)<<<$$ifnexists($$$fldattr(chghist-key-exclude))<<<$$S$$ifequal($$(JTYP$$fld),String)<<<$$(JV$$fld)>>>else<<<get$$fld|||AsStr()>>>$$S:=<<<,>>>>>>>>>>>> $$S:=<<<>>> $$CHBKEY:=<<<$$foreachfld($$PRIKEY)<<<$$ifexists($$$fldattr(chghist-key-exclude))<<<$$S$$ifequal($$(JTYP$$fld),String)<<<$$(JV$$fld)>>>else<<<get$$fld|||AsStr()>>>$$S:=<<<,>>>>>>>>>>>> $$ifexists($$$CHIDFG)<<< $$S:=<<<>>> $$CHIDKEY:=<<<$$foreachfld($$CHIDFG)<<<$$S$$ifequal($$(JTYP$$fld),String)<<<$$(JV$$fld)>>>else<<<get$$fld|||AsStr()>>>$$S:=<<<,>>>>>>>>> >>> >>> >>> package $$xattr($$FGCLASS,package,name); import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.BitSet; import java.util.HashMap; import org.apache.log4j.Logger; $$ifexists($$$HASVALMETH)<<< import com.sunn.jv.shared.datagrape.DGValMethods; >>> //Included from $$tool(protofilename) /** * Generated standard datagrape for table $$TABLE. */ /** * This file was generated by the $$tool(name) tool at $$tool(date). * <table border="2"> * <tr><th >Generated From</th></tr> * <tr><td>Prototype File</td><td>$$tool(protofilename)</td></tr> * <tr><td> XML Class Definition File</td><td>$$tool(xmlfilename)</td></tr> * <tr><td>Change History Enabled?</td><td>$$ifexists($$$CHGHIST)<<<Y>>>else<<<N>>></td></tr> * </table> * <p> * <H1>TABLE DEFINITION</H1> * <table border="2"> * <tr><th>Column</th><th>explicit<br>type</th><th>DB Type</th><th>Java<br>type</th><th>min<br>length</th><th>max<br>length</th><th>Dims</th><th>comment</th></tr> $$foreachfld($$FGTABLE,$$ALLFLDS)<<< * <tr> <td>$$fld PQR</td> $$BASEDON:=<<<$$$fldattr(basedon)>>> $$ifblank($$BASEDON)<<<$$BASEDON:=<<<$$$fldattr(basetype)>>>>>> <td>$$ifblank($$BASEDON)<<< >>>else<<<$$BASEDON>>></td> <td>$$$fldattr(dbtype)</td> <td>$$$fldattr(javatype)</td> <td>$$$fldattr(minlength)</td> <td>$$$fldattr(maxlength)</td> <td>$$$fldattr(dims)</td> $$DES:=<<<$$ifnblank($$$fldattr(ShortDescr))<<<SHORT:$$fldattr(ShortDescr)>>>else<<<LONG:$$$fldattr(LongDescr)>>>>>> <td>DES: $$DES </td> </tr> >>> <p> <p> <table border="2" > <tr><th >KEY DEFINITIONS</th></tr> <tr><th>Name</th><th>Contents</th></tr> $$$foreachfg($$FGTABLE,$$KEYS)<<< <tr><th>$$fg</th> <td> $$$foreachfld($$fg)<<< $$$ifequal($$$fldattr(encrypt),y)<<<$$error("Encrypted field $$fld is in key $$fg")>>> $$ifequal($$fldattr(dbtype),VARCHAR TEXT CHAR "CHAR(1)")<<< $$SUF:=<<<$$ifexists($$$(CIS_$$fld))<<<$$$EUC_SUF>>>>>> >>>else<<< $$SUF:=<<<>>> >>> $$(KFS_$$fld):=<<<$$SUF>>> $$fld$$SUF<br> >>> </td> </tr> >>> </table> ** */ public class $$FGCLASS extends JvDataGrape implements MakeFromXMLNode { // The log4j logger for this class. private static Logger logger = Logger.getLogger($$FGCLASS.class); /** The name of this table */ public static final String tableName = "$$TABLE"; /** * Exemplar singleton object than can be used by callers to access the * appropriate factory routines. Use this to call methods such as * getArrayvia... if you don't have a handy instance to use. */ private static final $$FGCLASS oMe = new $$FGCLASS|||("DUMMY"); /** * The class object for me */ public static Class oMyClass = $$FGCLASS.class; /** * Descriptive table name */ public static final String descrTableName = \ $$ifexists($$$fgattr($$TABLE,descr-name))<<<"$$fgattr($$TABLE,descr-name)">>>else<<<null>>>; /** * Pool ID for database connections. */ public static final int nCNCTPOOLID = $$fgattr($$FGTABLE,poolid); // // Fields // $$foreachfld($$FGTABLE)<<< /** * $$$fldattr(Descr). */ protected $$fldattr(javatype)$$$(AS_$$fld) $$(JV$$fld)$$(JINIT$$fld); >>> // /** * Index of each field */ $$_NX:=<<<-1>>> $$foreachfld($$FGTABLE)<<< public static final String strTAG_$$toupper($$fld) = "$$fld"; public static final int _nx$$fld = $$preinc($$_NX); >>> $$$foreachstr($$$EUCFLDS)<<< public static final int _nx$$str|||_UC = $$preinc($$_NX); >>> $$NUMFLDS:=<<<$$preinc($$_NX)>>> /** * Array containing all field names. */ public static final String[] _astrFieldNames = { $$foreachfld($$FGTABLE)<<<\ "$$fld"$$ifnotlast<<<,>>> >>> }; /** * Array containing descriptive field names. */ public static final String[] _astrDescrNames =\ $$ifexists($$$HASDSCRNAMES)<<< { $$foreachfld($$FGTABLE)<<<\ $$ifexists($$$fldattr(descr-name))<<<"$$fldattr(descr-name)">>>else<<<null>>>$$ifnotlast<<<,>>> >>> };\ >>>else<<< null;>>> /** * Array containing base field type (from apptypes.xml) for each field. */ public static final String[] _astrBaseType = { $$foreachfld($$FGTABLE)<<<\ "$$fldattr(base)"$$ifnotlast<<<,>>> >>> }; /** * An array of arrays containing foreign key definitions. Each sub-array contains * the foreign table name as the first element followed by the column names. * Use the getForeignKey method to access these. */ protected static final String[][] _aastrForeignKeys =\ $$ifexists($$$FORKEYS)<<<\ { $$foreachfg($$FGTABLE,$$FORKEYS)<<< {"$$$fgattr(ftable)",\ $$foreachfld($$fg)<<<"$$fld"$$ifnotlast<<<,>>>>>>}$$ifnotlast<<<,>>> >>> };\ >>>else<<< null;>>> /** * An optional key which may be used to identify a row for change history output */ public static final String[] astrIdentKey =\ $$ifexists($$$CHIDFG)<<< {$$foreachfld($$$CHIDFG)<<<"$$fld"$$ifnotlast<<<,>>>>>>}; >>>else<<< null;>>> /** * Array of booleans for each field indicating if field is an array. */ private static final boolean [] _abFieldIsArray = { $$foreachfld($$FGTABLE)<<<\ $$ifexists($$$fldattr(dims))<<<true>>>else<<<false>>>$$ifnotlast<<<,>>> >>> }; public final boolean [] abFieldIsArray = _abFieldIsArray; // True if row is locked in database. private boolean bIsLocked = false; /** * Map from field name to set method */ private static HashMap<String, Method> _hmSetMeth = buildSetMethMap($$FGCLASS.class, _astrFieldNames); // Argument array for set method invocation Object [] smArgs = new Object[1]; /** * Map from field name to field index */ public static HashMap<String, Integer> _hmFieldIXMap = buildFieldIXMap($$FGCLASS.class, _astrFieldNames); /** * Array of "getAsStr" methods by field index */ public static Method [] aoGetMeth = buildGetMethArray($$FGCLASS.class, _astrFieldNames); /** * Number of fields in table definition */ protected static final int _nx_Num = $$NUMFLDS; /** * Array of min lengths for all fields by field index */ public static short [] asMinLength = { $$foreachfld($$FGTABLE)<<< $$ifexists($$$fldattr(minlength))<<<$$fldattr(minlength)>>>else<<<0>>>$$ifnotlast<<<,>>> >>> $$$foreachstr($$$EUCFLDS)<<< , $$ifexists($$$fldattr($$str,minlength))<<<$$fldattr($$str,minlength)>>>else<<<0>>> >>> }; /** * Array of max lengths for all fields by field index */ public static short [] asMaxLength = { $$foreachfld($$FGTABLE)<<< $$ifexists($$$fldattr(maxlength))<<<\ $$select(0,$$split($$fldattr(maxlength),","))>>>else<<< 0>>>$$ifnotlast<<<,>>> >>> $$$foreachstr($$$EUCFLDS)<<< ,$$(UCMAX_$$str) >>> }; // Array of jdbc type for each field (jdbtyp attribute) protected String[] astrJdbTypes = { $$foreachfld($$FGTABLE)<<< "$$fldattr(jdbtype)"$$ifnotlast<<<,>>> >>> }; protected short[] asJdbcTypes = getTypesArray(astrJdbTypes); $$$foreachfg($$FGTABLE,$$KEYS)<<< /** * Array of field names for key $$fg */ protected static String astrKeyFields$$fg[] = { $$$foreachfld($$fg)<<< "$$(ICNAME_$$fld)"$$ifnotlast<<<,>>>>>> };