What is HastTable String, Object ?

Hello
I am new to HashTables and I have a bit of code that I don't understand.
private Hashtable<String, CalendarEvent> events = new Hashtable<String, CalendarEvent>();CalendarEvent is a class

Not sure exactly what you're asking, but my guess is it's related to Generics. They allow you to control the types of objects that a collection can hold, or what types can be passed to a method, or various other type-related tasks. Google "java generics" for more info.
With a HashMap, there's a key and a value. If you want the key to be a String, and the Value to be an Integer, you could say:
HashMap<String,Integer> myMap = new HashMap<String,Integer>();Or if you want an ArrayList to hold objects of type Widget:
ArrayList<Widget> myList = new ArrayList<Widget>();

Similar Messages

What's best: "(String) o" or "o.toString()"?

Title sais it all...
What's best: "(String) o" or "o.toString()"?
And why?

It depends what you're trying to do.
If o is known to be a String, but wasn't declared that way, and you need to use it as a String, then (String)o. This way the code expresses your intent. (It also saves you a method call, but that's not the reason you do it.)
If o is an arbitrary object and you want its String representation, then o.toString (or String.valueOf(o) if you need to protected yourself from null).
Don't make the mistake of thinking the two are in any way equivalent. The fact that in certain circumstances they evaluate to the same thing is just coincidence.

Convert Map String, Object to Map String,String ?

How can I convert a map say;
Map<String, Object> map = new Map<Striing, Object>();
map.put("value", "hello");
to a Map<String,String>.
I want to pass the map to another method which is expecting Map<String,String>.
Thanks

JoachimSauer wrote:
shezam wrote:
Because im actaully calling an external method to populate map which returns <String, Object>.Now we're getting somewhere.
Oh wait, no, we're not! We're back to my original reply:
What do you want and/or expect to happen if one of the values isn't actually a String object but something else?Nothing like a bit of confusion :). They are and always will be String objects.
So this external method, call it external1 for now returns a Map<String, Object>, I then want to pass this map to another external method external2 which takes Map <String,String> as a parameter.

Why create a String object no need to use constructor?

If we create a Java String object, we will do:
String s = "Hello";
And we won't do:
String s = new String("Hello");
In API doc, String() constructor description says "Initializes a newly created String object so that it represents an empty character sequence. Note that use of this constructor is unnecessary since Strings are immutable."
I am not sure how immutable is related to this??
Also, I wonder if the compiler will convert
String s = "Hello" to
String s = new String("Hello");
Thanks!

String s = new String("Hello");
This is a valid statement too..... But the compiler will not convert String s = "Hello" to String s = new String("Hello") as you suggested. The reason is that java has a sort of a String Bag. Everytime you do a String s = "Hello" it will check the bag and see if such a string already exists. If it does, it merely creates a pointer to it, because strings are immutable, it doesn't need to worry about others modifying that string. If the string doesn't exist then it creates the necessary memory for the string object and adds the reference to the bag.
However, once you do a String s = new String("Hello") what you are saying to the compiler is, "Hey, don't check the bag just create the String." This is all fine and dandy, except that it increases the memory size of your program unnecessarily.
V

Why jvm maintains string pool only for string objects why not for other objects?

why jvm maintains string pool only for string objects why not for other objects? why there is no pool for other objects? what is the specialty of string?

rp0428 wrote:
You might be aware of the fact that String is an immutable object, which means string object once created cannot be manipulated or modified. If we are going for such operation then we will be creating a new string out of that operation.
It's a JVM design-time decision or rather better memory management. In programming it's quite a common case that we will define string with same values multiple times and having a pool to hold these data will be much efficient. Multiple references from program point/ refer to same object/ value.
Please refer these links
What is Java String Pool? | JournalDev
Why String is Immutable in Java ? | Javalobby
Sorry but you are spreading FALSE information. Also, that first article is WRONG - just as OP was wrong.
This is NO SUCH THING as a 'string pool' in Java. There is a CONSTANT pool and that pool can include STRING CONSTANTS.
It has NOTHING to do with immutability - it has to do with CONSTANTS.
Just because a string is immutable does NOT mean it is a CONSTANT. And just because two strings have the exact same sequence of characters does NOT mean they use values from the constant pool.
On the other hand class String offers the .intern() method to ensure that there is only one instance of class String for a certain sequence of characters, and the JVM calls it implicitly for literal strings and compile time string concatination results.
Chapter 3. Lexical Structure
In that sense the OPs question is valid, although the OP uses wrong wording.
And the question is: what makes class Strings special so that it offers interning while other basic types don't.
I don't know the answer.
But in my opinion this is because of the hybrid nature of strings.
In Java we have primitive types (int, float, double...) and Object types (Integer, Float, Double).
The primitive types are consessons to C developers. Without primitive types you could not write simple equiations or comparisons (a = 2+3; if (a==5) ...). [autoboxing has not been there from the beginning...]
The String class is different, almost something of both. You create String literals as you do with primitives (String a = "aString") and you can concatinate strings with the '+' operator. Nevertheless each string is an object.
It should be common knowledge that strings should not be compared with '==' but because of the interning functionality this works surprisingly often.
Since strings are so easy to create and each string is an object the lack ot the interning functionality would cause heavy memory consumption. Just look at your code how often you use the same string literal within your program.
The memory problem is less important for other object types. Either because you create less equal objects of them or the benefit of pointing to the same object is less (eg. because the memory foot print of the individual objects is almost the same as the memory footpint of the references to it needed anyway).
These are my personal thoughts.
Hope this helps.
bye
TPD

Unable to read big files into string object and java.lang.OutOfMemory Prob

Hi All,
I have an application that uses applet and servlet communication. On the client side I am reading an large xml file of 12MB size (using JFileChooser) and converting the file to an string object using below code. But I am getting java.lang.OutOfMemory on the client side . But the same below code works fine for small xml files which are less than 4MB sizes:
BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(file),"UTF8"), 1024*12);
String s, s2 = new String();
while((s = in.readLine())!= null)
     s2 += s + "\n";
I even tried below code but still java.lang.OutOfMemory is coming:
while (true)
     int i = in.read();
     if (i == -1)
          break;
     sb.append(i);
Please let me know what am I doing wrong here ...
Thanks & Regards,
Sony.

Using a String is bad for the following reason:
When you initially create the String, it has a certain memory size (allocated length if you will). As you keep appending to this String, then memory reallocation will occur over and over, slowing your program down dramatically (ive seen with a 16k x 8 Char file taking 30 secs to read into memory using Strings in this way)
A Better way would be if you knew the number of characters in the XML file (Using some File size method for example) Then you can use a StringBuffer, which will pre allocate enough space (or try to, it may just be that you cannot create a string as large as you need). You can use toString() method to get the resultant in a String Object (the extra allocated space at the end of the Buffer will be removed)
StringBuffer strBuf = new StringBuffer(xxxx);
Where xx is the length (int). Assuming that you are only allowed to enter an int to the constructor then (platform depedant) an int is 2^31 at maximum (or whatever) which allows 2.14e9 characters, therefore an xml file being totally filed would allow a size of ~2048 MB to be read in.
Try it and see.

Unable to read big files into string object & java.lang.OutOfMemory Problem

Hi All,
I have an application that uses applet and servlet communication. On the client side I am reading an large xml file of 12MB size (using JFileChooser) and converting the file to an string object using below code. But I am getting java.lang.OutOfMemory on the client side . But the same below code works fine for small xml files which are less than 4MB sizes:
BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(file),"UTF8"), 1024*12);
String s, s2 = new String();
while((s = in.readLine())!= null)
s2 += s + "\n";
I even tried the below code but still java.lang.OutOfMemory is coming:
while (true)
int i = in.read();
if (i == -1)
break;
sb.append(i);
Please let me know what am I doing wrong here ...

Hi,
I could avoid the java.lang.OutOfMemory error using below code. But using below code I could read small files of sizes less than 4MB
but with large files of 12 MB the below code just simply hangs and I am unable to print the string object namely 's'.
My purpose is to construct an String or StringBuffer object out the user uploaded xml file at the client side and pass that object to server for processing. So how can I construct such object avoid memory problem and increasing the performance of such operations.
BufferedInputStream in = new BufferedInputStream(new FileInputStream(file));
byte[] b = new byte[in.available()];
in.read(b, 0, b.length);
String s = new String(b, 0, b.length);
in.close();
Thanks & Regards,
Sony.

Executing code in form of String object

hi to all,
I don't know if it's the right place to ask such a question, but at least, I can try my chance :)
Can I execute code originally written in a text area (JTextArea) (i.e. in form of a String object) as if it was code already embedded in the code flow ??

There are several solutions.
As suggested above use Runtime.exec() to compile it. You can do this either by having the user enter the entire class or by having the enter only a portion which you then wrap (they write a method, or some rules in a method, etc.)
There is a VM/version specific interface that allows you to compile without Runtime.exec() . You can search the site for examples of this.
You can also use one of the java embeddable languages if you just what 'code' rather than supporting the entire java language.....search the following page for "Scripting"...
http://flp.cs.tu-berlin.de/~tolk/vmlanguages.html

What is max String size?

Does the maximum amount of data a String can hold vary per a system's memory or is there a set cap? Would it be possible to store, say, a 48 MB file of ASCII values in a single String?

Can any one tell me, what i have to do if the String Object holds data more than 22MB.
The string object holds that much of data and then the same data have to be displayed in a text area.
i am doing something like this:
private void doReadFile(BufferedReader fileReader) {
String strial = "";
String s = "";
try{
     //ivjJProgressBar1.setBackground(new java.awt.Color(204,204,204));
if(fileReader != null)
ivjTextArea1.append("One Moment Please.....");
while ((s=fileReader.readLine()) != null)
     temptrial.append(s+"\n");
strial = temptrial.toString();
ivjTextArea1.setText(temptrial.toString());
fileReader.close();
} catch(Throwable exception){
     handleException(exception);
}

I need to run a piece of code which is inside a string object..is it possible?if so how?

i need to run a piece of code which is inside a string object..is it possible?if so how?

i need to run a piece of code which is inside a string object..is it possible?if so how?
How would anyone know?
You haven't said what 'code' you are talking about or what you mean by 'run' it.
Since you are asking us to 'guess' what you need to do I will guess that it is a valid batch file for your OS. So just save the contents of that string to a file and then use a ProcessBuilder to 'run' it.
See the example in the API
ProcessBuilder (Java Platform SE 7 )

Help with string object code

Hello,
First off thanks in advance to anyone who helps. I am trying to write a program that using a class string object to convert this kind of "text speech" to english. For example if the user inputs "HowAreYou?", I want the program to output "How are you?" I am having too much trouble with strings for some reason. This is what I have so far and I am not sure where to go from here. Should I use a do loop to check through the input string until it is done seperating the words? And how should I go about doing that?
import java.util.Scanner;
public class P8
public static void main( String args[] )
char choice;
String line = null;
String answer = null;
Scanner scan = new Scanner(System.in);
do
System.out.println();
System.out.print("ENTER TextSpeak sentence(s): ");
line = scan.nextLine();
System.out.print( "Converted to English: \t ");
System.out.print( textSpeaktoEng( line ) );
System.out.println();
System.out.print("Want more TextSpeak?\t\t ");
answer = scan.next();
choice = answer.charAt(0);
if( scan.hasNextLine() )
answer = scan.nextLine();
}while(choice != 'N' && choice != 'n');
public static String textSpeakToEng(String s)
String engStr = null;
if( Character.isUpperCase( s.charAt(j) ) )
engStr += ? ?;
engStr += Character.toLowerCase( s.charAt(j) );
scan.close();
}

I got my program to compile and run but I have a problem. If I input something like "ThisForumIsGreat" it will output just "t f i g" in lower case letters. Any suggestions?
import java.util.Scanner;
public class P8
public static void main( String args[] )
   char     choice;                          // Repeat until n or N
   String line   = null;                     // Sentences to toTextSpeak
   String answer = null;                     // Repeat program scan
   Scanner scan = new Scanner(System.in);    // Read from keyboard
   do
      System.out.println();
      System.out.print("ENTER TextSpeak sentence(s): ");
      line = scan.nextLine();                // Read input line
      System.out.print( "Converted to English: \t    ");
      System.out.print( textSpeakToEng( line ) );
      System.out.println();
      System.out.print("Want more TextSpeak?\t\t ");
      answer = scan.next();                  // Read line, assign to string
      choice = answer.charAt(0);             // Assign 1st character
      if( scan.hasNextLine() )               // <ENTER> character
        answer = scan.nextLine();            // Read line, discard
}while(choice != 'N' && choice != 'n');    // Repeat until input start n or N
public static String textSpeakToEng(String s)
   String engStr = null;
   int i;
   for ( i = 0; i < s.length(); ++i )
   if( Character.isUpperCase( s.charAt(i) ) )
     engStr += " ";                                  // Append 1 blank space
     engStr += Character.toLowerCase( s.charAt(i) ); // Append lowercase
   return( engStr );
}

Converting an array of char to a String object

let's say i have an extremely long character array of 1 million chars and store a text file to it. is it safe to cast the character array into a String object? if not, what is a safe way to convert it to a String? I need to search through the String and create substrings and stuff. Thanks you!

HOMEWORK ALERT HOMEWORK ALERT
You can't cast from a character to a String. That doesn't work.
However, in a fit of being helpful.
Look at the constructors for the String object in the API
Link ===> http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html#String(char[])
char[] charA = {'H', 'E', 'L', 'L', 'O', ' ', 'W', 'O', 'R', 'L', 'D' } ;
String a = new String(charA) ;
System.out.println(a) ;There's a price for my help, and it's this. Now that you understand what you can do, is it a good idea or a bad idea and why ???
Explain.

Help needed to understand String object

Hi all,
I want to understand the difference in statements
new String("") and string declared as "".
Is this only a shortcut or is there any other difference like re-using the string objects created in the pool?
what is the value in the String instantiated as new String()
Thanx

Hi all,
I want to understand the difference in statements
new String("") and string declared as "".
Is this only a shortcut or is there any other
difference like re-using the string objects created in
the pool?
what is the value in the String instantiated as new
String()
ThanxLiteral strings are internalized and reused, whereas new String always creates a new object.
Thus
String s = "";
is better than
String s = new String("");
The purpose of the String copy constructor is not made explicit in the API docs, but if you look at Sun's code, you will see that it can serve a purpose:
Substrings reference the same underlying char array as the String they are a substring of - they just have a different offset into that array, and a different length. The copy constructor however, creates a String with a new underlying char array, that contains only the relevant 'subarray' of the original String' sunderlying char array. So, if your code receives a large String, and then discards that String and passes around a substring of it, you might find you save a great deal of memory by using new String(s.substring(x, y));
Note however that these comments are based solely on Sun's core API code, and it might not be the case that other vendors implement String the same way, or that Sun will continue to do so into the future.

Converting Base64 encoded String to String object

Hi,
Description:
I have a Base64 encoded string and I am using this API for it,
[ http://ws.apache.org/axis/java/apiDocs/org/apache/axis/encoding/Base64.html]
I am simply trying to convert it to a String object.
Problem:
When I try and write the String, ( which is xml ) as a XMLType to a oracle 9i database I am getting a "Cannot map Unicode to Oracle character." The root problem is because of the conversion of the base64 encoded string to a String object. I noticed that some weird square characters show up at the start of the string after i convert it. It seems like I am not properly converting to a String object. If i change the value of the variable on the fly and delete these little characters at the start, I don't get the uni code error. Just looking for a second thought on this.
Code: Converting Base64 Encoded String to String object
public String decodeToString( String base64String )
byte[] decodedByteArray = Base64.decode( base64String );
String decodedString = new String( decodedByteArray, "UTF-8");
}Any suggestions?

To answer bigdaddy's question and clairfy a bit more:
Constraints:
1. Using a integrated 3rd party software that expects a Base64 encoded String and sends back a encoded base64 String.
2. Using JSF
3. Oracle 10g database and storing in a XMLType column.
Steps in process.
1. I submit my base64 encoded String to this 3rd party software.
2. The tool takes the encoded string and renders a output that works correctly. The XML can be modified dynamically using this tool.
3. I have a button that is binded to my jsf backing bean. When that button is clicked, the 3rd party tool sets a backing bean string value with the Base64 String representing the updated XML.
4. On the backend in my jsf backing bean, i attempt to decode it to string value to store in the oracle database as a XML type. Upon converting the byte[] array to a String, i get this conversion issue.
Possibly what is happen is that the tool is sending me a different encoding that is not UTF-8. I thought maybe there was a better way of doing the decoding that i wasn't looking at. I will proceed down that path and look at the possibility that the tool is sending back a different encoding then what it should. I was just looking for input on doing the byte[] decoding.
Thanks for the input though.
Edited by: haju on Apr 9, 2009 8:41 AM

Error accesing/using a String object.......

Hi again folks!
Well now I have other problem, I don?t know what's happening, but I have simple C++ program as shared object which retrieves information from a Database, with the query results it makes a single string with all the data retrieved.
This C++ program is called by a Java program using JNI, but when my Java program receives the string and tries to parse it with the StringTokenizer object I get an error like this:
SIGSEGV 11* segmentation violation
si_signo [11]: SIGSEGV 11* segmentation violation
si_errno [0]: Error 0
si_code [1]: SEGV_ACCERR [addr: 0x45cb2448]
stackbase=DFFFF0A0, stackpointer=DFFFD0CC
Full thread dump:
"SIGQUIT handler" (TID:0xdd300190, sys_thread_t:0x42020, state:R, thread_t:
t@5, sp:0x0 threadID:0xdeaf0dd8, stack_base:0xdeaf0d6c, stack_size:0x20000) prio
=0
"Finalizer thread" (TID:0xdd3000d0, sys_thread_t:0x41fb8, state:CW, thread_t
: t@4, sp:0x0 threadID:0xdebb0dd8, stack_base:0xdebb0d6c, stack_size:0x20000) pr
io=1
"main" (TID:0xdd3000a8, sys_thread_t:0x42908, state:R, thread_t: t@1, sp:0x0
threadID:0x20a18, stack_base:0xdffff0a0, stack_size:0x800000) prio=5 *current t
hread*
ObjectFactory.createObject(Compiled Code)
Test.main(Compiled Code)
Registered Monitor Dump:
PCMap lock: <unowned>
Thread queue lock: <unowned>
Name and type hash table lock: <unowned>
String intern lock: <unowned>
JNI pinning lock: <unowned>
JNI global reference lock: <unowned>
BinClass lock: <unowned>
Class loading lock: owner "main" (0x42908, 1 entry)
Java stack lock: <unowned>
Code rewrite lock: <unowned>
Heap lock: <unowned>
Has finalization queue lock: <unowned>
Finalize me queue lock: <unowned>
Waiting to be notified:
"Finalizer thread"
Monitor cache expansion lock: <unowned>
Monitor registry: owner "main" (0x42908, 1 entry)
Abort (core dumped)
I dont know if I have to do something special before use the String, what's happening?
Any comment will be welcome.
Thanks in advance.

I hope this could help to clarify the scenario
In a previous query I get the number of rows returned by the next query
this number is stored at SQL_NUM_SEGS.arr variable. When I have the number of rows I reserve memory for the char array that I'm going to return with all the information.
AC01_TRAMA=(char *)malloc(atol(SQL_NUM_SEGS.arr) * INT02_TAM_SEG);
/*embedded PL/SQL code*/
EXEC SQL DECLARE CUR_EMISORA CURSOR FOR
SELECT rtrim(to_char(NUM_EMISORA)) || '|' || rtrim(SERIE) || '|' || EMISORA || '|' || STATUS FROM NUCL_EMISORA WHERE STATUS NOT LIKE 'BAJA';
EXEC SQL OPEN CUR_EMISORA;
The next lines of code generate a string like this:
"UTIL0000|366|239|93-1|FINASA |VIGE|243|3-90|BONSER |VIGE|248|2-94|BONSER |VIGE|287|970403|GOBFED |VIGE|362|93-4|BANOBRA |VIGE|404|2-90|BONSER |VIGE|407|2-95|FINASA |VIGE|633|95|BANMEXI |VIGE|641|2-94|PROMEX |VIGE|645|1-95|FINASA |VIGE|647|1-96|FINASA |VIGE|660|92|BANORTE |VIGE|677|93-3|BANOBRA |VIGE|678|1-90|BIATLAN |VIGE|736|2-95|BONSER |VIGE|786|1-94|BNCI |VIGE|1007|021024|GOBFED |VIGE|1008|021121|GOBFED |VIGE|"
this string is assigned to AC01_TRAMA(char pointer)and then I return this string in the next way:
return ( (env)->NewStringUTF(AC01_TRAMA) );
My java program is this:
public class Monitor
public native String consultaGeneral();
static
System.load("/afs/invermexico.com.mx/usr2/salponce/gustavo/jni/src_db/Monitor.so");
public String getTrama()
     String strTrama=consultaGeneral();
return strTrama;
public static void main(String []args)
String strEmisora, strNumEmisora, strStatus,strSerie;
Monitor m=new Monitor();
System.out.println(m.getTrama());
/*java.util.StringTokenizer STk = new java.util.StringTokenizer(m.getTrama(),"|");
while(objSTk.hasMoreTokens())
strEmisora = objSTk.nextToken();
strNumEmisora = objSTk.nextToken();
strStatus = objSTk.nextToken();
strSerie = objSTk.nextToken();
System.out.println("\n<------>\n"+ strEmisora+"\n"+strNumEmisora+"\n"+strStatus+"\n"+strSerie);
}//while
Well, this java program works fine but if I try to create an String tokenizer with it the program crashes, even if I assign the result into a new String object.
I'm going to put all the code rigth here
C++ program
#include "ast_bd.h"
#include "Monitor.h"
#include <stdlib.h>
#include <stdio.h>
#include <strings.h>
#include <jni.h>
#define CHA01_NOMBRE_APP "UTIL0000"
#define CHA02_FIN_DE_SEG "|"
#define INT01_TAM_LONG 20
#define INT02_TAM_SEG 52 /*52 BYTES; Tama�o de los 4 datos en conjunto*/
Prop�sito :-Determinar cuales son las emisoras con estado de vigente
o bloqueado.
-Obtener los datos de una emisora espec�fica.
-Actualizar los datos de una emisora espec�fica.
JNIEXPORT jstring JNICALL Java_Monitor_consultaGeneral
(JNIEnv *env, jobject obj)
long LO01_STATUS=1;
char CH01_NUM_SEGS[INT01_TAM_LONG];
char AC01_TRAMA, AC02_SEG;
EXEC SQL BEGIN DECLARE SECTION;
VARCHAR SQL_NUM_SEGS[INT01_TAM_LONG],
SQL_RESULT[INT02_TAM_SEG];
EXEC SQL END DECLARE SECTION;
EXEC SQL WHENEVER SQLERROR CONTINUE;
open_db();
EXEC SQL SELECT to_char(COUNT(1)) INTO:SQL_NUM_SEGS FROM NUCL_EMISORA WHERE STATUS NOT LIKE 'BAJA';
LO01_STATUS = sqlca.sqlcode;
if( !LO01_STATUS ) /*si todo sali� bien*/
strcpy(CH01_NUM_SEGS,SQL_NUM_SEGS.arr);
CH01_NUM_SEGS[SQL_NUM_SEGS.len]='\0';
AC01_TRAMA=(char *)malloc(atol(SQL_NUM_SEGS.arr) * INT02_TAM_SEG);
sprintf(AC01_TRAMA,"%s|%s|\0", CHA01_NOMBRE_APP, CH01_NUM_SEGS);
EXEC SQL DECLARE CUR_EMISORA CURSOR FOR
SELECT rtrim(to_char(NUM_EMISORA)) || '|' || rtrim(SERIE) || '|' || EMISORA || '|' || STATUS FROM NUCL_EMISORA WHERE STATUS NOT LIKE 'BAJA';
EXEC SQL OPEN CUR_EMISORA;
LO01_STATUS = sqlca.sqlcode;
if( !LO01_STATUS ) /*si todo sali� bien*/
do
EXEC SQL FETCH CUR_EMISORA INTO :SQL_RESULT;
LO01_STATUS = sqlca.sqlcode;/*Recuperamos el estado de la operacion fetch*/
if( !LO01_STATUS )
AC02_SEG=(char *)malloc(SQL_RESULT.len);
strcpy(AC02_SEG,SQL_RESULT.arr);
AC02_SEG[SQL_RESULT.len]='\0';
strcat(AC01_TRAMA,AC02_SEG);
strcat(AC01_TRAMA,CHA02_FIN_DE_SEG);
}/*if fetch correcto*/
else
LO01_STATUS=1;
}while(!LO01_STATUS);
EXEC SQL CLOSE CUR_EMISORA;/*Cerramos el cursor*/
Si no se recuperaron registros, se indicara en el numero de segmentos
al inicio de la trama.
}/*if open cursor*/
}/*if conteo*/
puts(AC01_TRAMA);
return ( (env)->NewStringUTF(AC01_TRAMA) );
}/*consulta_general*/
Java programs
public class Monitor
public native String consultaGeneral();
static
System.load("/afs/invermexico.com.mx/usr2/salponce/gustavo/jni/src_db/Monitor.so");
public String getTrama()
     String strTrama=consultaGeneral();
return strTrama;
public static void main(String []args)
String strEmisora, strNumEmisora, strStatus,strSerie;
Monitor m=new Monitor();
System.out.println(m.getTrama());
/*java.util.StringTokenizer STk = new java.util.StringTokenizer(m.getTrama(),"|");
while(objSTk.hasMoreTokens())
strEmisora = objSTk.nextToken();
strNumEmisora = objSTk.nextToken();
strStatus = objSTk.nextToken();
strSerie = objSTk.nextToken();
System.out.println("\n<------>\n"+ strEmisora+"\n"+strNumEmisora+"\n"+strStatus+"\n"+strSerie);
}//while
Thank's

What is HastTable String, Object ?

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