Writing a small code in HANA

Hi,
I am interested in HANA ..I am totally new to this side ..
I read all papers on HANA .Theoretically I know HANA mostly but wants to taste by practically .
Please can somebody tell me the steps to write a small code on this ??
What tool is required...whether tool is free ...how can I use this tool ...
Please do the needful and guide me .
-Ashwini

Hi Aswinin,
You can get 30 days free HANA trail . There you can try the theory part you learned .. Welcome to HANA , Enjoy it
scn.sap.com/docs/DOC-28191
Sreehari

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Regards,
Amol

Lars,
Actually we are spending more time to generating logic from BW ABAP extractor to creation of HANA views.
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Hi.
I got the following code and I really don't know what it does or even why. All I know It's not UC enabled ( since it's uxinf the type x).
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FORM TRANSLATE_FIELD USING    STRING_TRAN
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DATA: STRING(255),
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How to create multi node /data Tree by using few loops or small code

HI.
I WANT TO CREATE A TREE WHICH IS HAVING MULTI NUMBER OF NODE LEVEL (USER HAVE THE ABILITY TO CREATE AS MANY AS REQUIRED NODE LEVEL OR SUBLEVEL). HOW CAN I POPULATE THE TREE WITH SMALL CODE. AS EVERY NODE LEVEL NEED ON NESTED LOOP. SO HOW CAN I MANAGE TO POPULATE THE NODE WITH FEW LOOPS. OR THERE IS ANY OTHER WAY TO MANAGE THIS PROBLEM.
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Hi ,
I am trying to do the job , but i do not understand where
is the problem with my loop , i am sending it , could you
see it , and sujjest me , what to do. or if you have time
can you write the code for me. as i am very much needy for
this job.
The Table is as:-
CREATE TABLE TREE_01(
RECORD_NO NUMBER(10), --
OWN_CODE VARCHAR2(10),
PARENT_NO NUMBER(10),
PARENT_CODE VARCHAR2(10),
LEVELL NUMBER(4),
DEPT NUMBER(6),
CONSTRAINT RNO_PK PRIMARY KEY(RECORD_NO));
INSERT INTO TREE_01 VALUES(1,'1',0,'0',2,8540);
INSERT INTO TREE_01 VALUES(2,'2',0,'0',2,8540);
INSERT INTO TREE_01 VALUES(3,'3',0,'0',2,8540);
INSERT INTO TREE_01 VALUES(4,'4',0,'0',2,8540);
INSERT INTO TREE_01 VALUES(5,'1',1,'0',3,8540);
INSERT INTO TREE_01 VALUES(6,'2',1,'0',3,8540);
INSERT INTO TREE_01 VALUES(7,'3',1,'0',3,8540);
INSERT INTO TREE_01 VALUES(8,'1',3,'0',3,8540);
INSERT INTO TREE_01 VALUES(9,'2',3,'0',3,8540);
the loop shoud look like
|_DataProcessing
| |+Work_orders
| |_Programmers File
| | |_James
| | | |+Requests
| | | |+Leves
| | | |_Projects
| | | |_Projects001
| | |+Steven
|+HealthCare
|+Transportation
So the loop should be such that it can be go to any level of any node.
the Code i writter is As follows.
The Following Procedure is called in form leve
When new forms instance.
PROCEDURE REFRESH_TREE2 IS
CURSOR CUR_DEPT IS
     SELECT DEPT
     FROM TREE_01 GROUP BY DEPT;
CURSOR CUR_LOOP1(PARENT1 NUMBER,LEVEL1 NUMBER) IS
     SELECT RECORD_NO,
     OWN_CODE,
     PARENT_NO,
     DEPT ,
     PARENT_CODE,
     LEVELL
     FROM TREE_01
     WHERE LEVELL=LEVEL1
     AND RECORD_NO=PARENT1;
CURSOR CUR_LOOP2(PARENT2 NUMBER,LEVEL2 NUMBER) IS
     SELECT RECORD_NO,
     OWN_CODE,
     PARENT_NO,
     DEPT ,
     PARENT_CODE,
     LEVELL
     FROM TREE_01
     WHERE LEVELL=LEVEL2
     AND RECORD_NO=PARENT2;
CURSOR LEVEL(PARENTNO NUMBER) IS
     SELECT LEVELL FROM TREE_01 WHERE PARENT_NO=PARENTNO
     ORDER BY RECORD_NO;
     V_I NUMBER;
     V_IGNORE NUMBER;
     RG_DEPT RECORDGROUP;
     RG_CABI RECORDGROUP;
     V_INIT_STATE GROUPCOLUMN;
     V_LEVEL GROUPCOLUMN;
     V_LABEL GROUPCOLUMN;
     V_ICON GROUPCOLUMN;
     V_VALUE GROUPCOLUMN;
     V_CHANGE_VALUE VARCHAR2(20);
     V_CHANGE_VALUE1 NUMBER(3);
     V_CHANGE_VALUE2 NUMBER(3);
V_LEVEL_COUNT NUMBER;
BEGIN
     SELECT MAX(LEVELL) INTO V_LEVEL_COUNT FROM TREE_01;
     RG_DEPT:=FIND_GROUP('DEPT');
     if not id_null(RG_DEPT) then
delete_group(RG_DEPT);
end if;
     RG_DEPT:=create_group('DEPT');
     V_INIT_STATE := add_group_column(RG_DEPT, 'INIT_STATE', NUMBER_COLUMN);
     V_LEVEL :=ADD_GROUP_COLUMN(RG_DEPT,'LEVEL',NUMBER_COLUMN);
     V_LABEL :=ADD_GROUP_COLUMN(RG_DEPT,'LABEL',CHAR_COLUMN,40);
     V_ICON :=ADD_GROUP_COLUMN(RG_DEPT,'ICON',CHAR_COLUMN,20);
     V_VALUE :=ADD_GROUP_COLUMN(RG_DEPT,'VALUE',CHAR_COLUMN,15);
     V_I :=1;
     FOR DEPTREC IN CUR_DEPT LOOP
     ADD_GROUP_ROW(RG_DEPT,V_I);
     SET_GROUP_NUMBER_CELL(V_INIT_STATE,V_I,1);
     SET_GROUP_NUMBER_CELL(V_LEVEL ,V_I,1);
     SET_GROUP_CHAR_CELL(V_LABEL ,V_I,FILING.ELOOK_IT(11,0,DEPTREC.DEPT));--MAIN_MINOR));
     SET_GROUP_CHAR_CELL(V_ICON ,V_I,NULL);
     SET_GROUP_CHAR_CELL(V_VALUE ,V_I,TO_CHAR(DEPTREC.DEPT)); --MAIN_MINOR));
     V_I:= V_I +1;
     V_CHANGE_VALUE := DEPTREC.DEPT;
     FOR I IN 1..V_LEVEL_COUNT LOOP
     FOR DEPTREC1 IN CUR_LOOP1(V_CHANGE_VALUE,I) LOOP --MAIN_MINOR,I) LOOP
     ADD_GROUP_ROW(RG_DEPT,V_I);
     SET_GROUP_NUMBER_CELL(V_INIT_STATE,V_I,1);
     SET_GROUP_NUMBER_CELL(V_LEVEL ,V_I,I);
     SET_GROUP_CHAR_CELL(V_LABEL ,V_I,DEPTREC1.RECORD_NO);
     SET_GROUP_CHAR_CELL(V_ICON ,V_I,NULL);
     SET_GROUP_CHAR_CELL(V_VALUE ,V_I,DEPTREC1.RECORD_NO);
     V_I:= V_I +1;
     SELECT count(LEVELL) INTO V_CHANGE_VALUE1
FROM TREE_01
WHERE RECORD_NO=DEPTREC1.RECORD_NO
     AND PARENT_NO=DEPTREC1.PARENT_NO
     AND LEVELL=DEPTREC1.LEVELL;
     SELECT MAX(LEVELL) INTO V_CHANGE_VALUE2
     FROM TREE_01
     WHERE RECORD_NO=DEPTREC1.RECORD_NO
     AND PARENT_NO=DEPTREC1.PARENT_NO
     AND LEVELL=DEPTREC1.LEVELL;
          FOR j IN 1..V_CHANGE_VALUE1 loop
          FOR LVL IN LEVEL(DEPTREC1.RECORD_NO) LOOP
          FOR DEPTREC2 IN CUR_LOOP2(DEPTREC1.RECORD_NO, LVL.LEVELL) LOOP
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     SET_GROUP_NUMBER_CELL(V_INIT_STATE,V_I,1);
     SET_GROUP_NUMBER_CELL(V_LEVEL ,V_I,LVL.LEVELL);
     SET_GROUP_CHAR_CELL(V_LABEL ,V_I,DEPTREC2.RECORD_NO);
     SET_GROUP_CHAR_CELL(V_ICON ,V_I,NULL);
     SET_GROUP_CHAR_CELL(V_VALUE ,V_I,DEPTREC2.RECORD_NO);
     V_I:= V_I +1;
     V_CHANGE_VALUE := DEPTREC2.RECORD_NO;
               end loop;
     end loop;
     END LOOP;
     END LOOP;
     END LOOP;
     END LOOP;
     ftree.set_tree_property('NAVIGATOR.NAV_DISPLAY',ftree.record_Group, rg_dept);
     end;

Need help in writing a small java code

Hi,
I have a small requirement where I need write a small java code. I am thinking of using array. Please suggest if you know the solution:
1. Need to compare user logon id is preset in the lookup table or not.
2. If user id present in the lookup then send type "A" mail
3. If user id in not present in the lookup then send type "B" email.
Please suggest.
Thanks,
Kalpana.

use this code . you have to pass userlogin and lookup name
Public String GetEmail(String UserLogin,String lookupcode)
String email;
try{
tcLookupOperationIntf lookupIntf = Platform.getService(tcLookupOperationIntf.class);
HashMap<String, String> lookupValues = getLookupHashMap(lookupIntf, lookupCode);
String found = lookupValues.get(UserLogin);
if (found!=null) email= "EMAIL A";
else
email= "EMAIL B";
}catch(Exception e){}
return email;
private HashMap<String, String> getLookupHashMap(tcLookupOperationsIntf lookupOperationsIntf, String lookupCode)throws tcAPIException,tcInvalidLookupException,tcColumnNotFoundException {
HashMap<String, String> lookupMap = new HashMap<String, String>();
          tcResultSet resultLookupHashMap = lookupOperationsIntf
                    .getLookupValues(lookupCode);
          int countResultLookupHashMap = resultLookupHashMap.getRowCount();
if (countResultLookupHashMap > 0) {
               for (int i = 0; i < countResultLookupHashMap; i++) {
                    resultLookupHashMap.goToRow(i);
                    lookupMap.put(resultLookupHashMap..getStringValue("Lookup Definition.Lookup Code Information.Code Key"),
resultLookupHashMap.getStringValue("Lookup Definition.Lookup Code Information.Decode"));
return lookupMap;
}

Help needed in writing a small piece of ABAP Code

Subject : look up in an ODS and update in a characteristic routine (BI 7.0)
Hi ,
My requirement is : I have data coming from both legacy as well as SAP Systems. The user wants both legacy as well as SAP fields data in their reports.
I have a Standard DSO ( say DSO1) with all the legacy fields with direct mappings from Legacy sytem along with couple of SAP fields which are not mapped as of now.
I have few more DSO's which have just the legacy field and corresponding SAP field data.
like DSO 2 with ZCOMPCODE and 0COMPCODE data.
All i have to do is write a Routine for unmapped 0COMPCODE field in DSO1 that pulls up corrersponding 0COMPCODE values for ZCOMPCODE from DSO 2 .
*Could someone please help me with the Coding part of the Routine.*
Greatly appreciate your help.

CREATE OR REPLACE FUNCTION fucntion_name(latA IN NUMBER, longA IN NUMBER, latB IN NUMBER, longB IN NUMBER) RETURN NUMBER
IS
pi CONSTANT NUMBER:=3.14159;
theta NUMBER;
distX NUMBER;
distY NUMBER;
distZ NUMBER;
distP NUMBER;
BEGIN
theta :=longA - longB;
distX :=sin( latA * PI /180) * sin ( latB * PI /180) + cos ( latA * PI/180) * cos ( latB * PI/180) * cos ( theta * PI / 180);
distY :=acos(distX); --this is arc cosine
distZ :=distY * 180/PI; --PI refers to the mathematical PI
distP :=distZ * 60 * 1.1515; --this value should be returned. Of course the intermediate variable names don't matter.
RETURN distP;
END;Edited by: Ora on May 3, 2011 11:46 PM

Small code correction

I am new in Java, I need help for small correction of applet code(I'm not confident how to make this correctly)- I need clean a popup banner at applet loading. The about part , which appears by click on 'about' button, can be left without changes, it does not prevent me.
Part of a code containing a popup:
import a.*;
import java.applet.Applet;
import java.applet.AppletContext;
import java.awt.*;
import java.awt.event.*;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.*;
public final class dbView extends Applet
implements Runnable, ActionListener, o, ItemListener
public void stop()
if(A != null)
A.dispose();
if(t != null)
t.dispose();
private void _mthvoid()
B = a.i.a(getClass(), "Begin.gif");
e = a.i.a(getClass(), "Right.gif");
z = a.i.a(getClass(), "Left.gif");
u = a.i.a(getClass(), "End.gif");
b = a.i.a(getClass(), "Redo.gif");
J = a.i.a(getClass(), "Binocular.gif");
m = a.i.a(getClass(), "Home.gif");
MediaTracker mediatracker = new MediaTracker(this);
mediatracker.addImage(B, 0);
mediatracker.addImage(e, 0);
mediatracker.addImage(z, 0);
mediatracker.addImage(u, 0);
mediatracker.addImage(b, 0);
mediatracker.addImage(J, 0);
mediatracker.addImage(m, 0);
try
mediatracker.waitForAll();
catch(InterruptedException interruptedexception) { }
private int _mthdo(String s1, String s2)
return s1.indexOf(s2);
public String getAppletInfo()
return "Name: Beer Viewer.java\r\nLager Beer: 1.01\r\nPromouter: Best Beer\r\nBest Beer in the world!\r\nFamous light brand.\r\nLegendary Lager Beer\r\ne-mail: [email protected]";
private void a(Graphics g1)
g1.setColor(Color.white);
g1.drawString("Best Beer in the world!", 125, 260);
g1.drawString("Famous light brand.", 125, 270);
g1.drawString("Legendary Lager Beer", 125, 280);
g1.drawString("e-mail: [email protected]", 125, 290);
private final void _mthfor(String s1)
if(s1 == null || s1.length() == 0)
d = false;
StringBuffer stringbuffer = new StringBuffer();
stringbuffer.append("Beer Viewer\n");
if(d)
stringbuffer.append("Ask for beer: ").append(s1).append("\n");
stringbuffer.append("Best Beer in the world!, Famous light brand\n");
stringbuffer.append("Legendary Lager Beer\n");
stringbuffer.append("Codebase: ").append(getCodeBase().toString()).append("\n");
stringbuffer.append("Documentbase: ").append(getDocumentBase().toString()).append("\n");
k = stringbuffer.toString();
if(d)
o = new c(this, k);
private void f()
remove(q);
q.invalidate();
_mthvoid();

yes

I'm having trouble writing a polynomial code.

I'm having trouble with a polynomial code I'm supposed to conjour it. It's simply a code that adds, subtracts, and multiplies polynomials. However, there are a few methods I do not know how to come up with (I left them blank), and when I test the code write now, it doesn't work. Here's the code -- can anyone help?
public class Polynomial implements Cloneable {
     private int m_degree;
     private double[] m_coefficient;
     // This is the default constructor
     public Polynomial() {
          super();
          m_degree = 0;
          m_coefficient = new double[5];
     // This allows the user to build a polynomial by putting a constant in
     public Polynomial(double constant) {
          this();
          m_coefficient[0] = constant;
     public Polynomial(Polynomial source) {
     // These are the getters
     public double getCoefficient(int degree) {
          return m_coefficient[degree];
     public int getDegree() {
          return m_degree;
     // These are the setters
     public void addToCoefficient(double amount, int degree) {
          m_coefficient[degree] += amount;
     public void assignCoefficient(double newCoefficient, int degree) {
          m_coefficient[degree] = newCoefficient;
     public void clear() {
          for (int i = 0; i < m_coefficient.length; i++) {
               m_coefficient[i] = 0;
     public void reserve(int degree) {
     // These are other, useful methods
     public int nextTerm(int k) {
          int value = 0;
          return value;
     public double eval(double x) {
          double value = 0;
          // This goes through all the exponents in the polynomial
          for (int i = 0; i < getDegree(); i++) {
               // += allows you to add instead of overriding the next term
               value += getCoefficient(i) * Math.pow(x, i);
          return value;
     // Here is our addition method
     public static Polynomial add(Polynomial p1, Polynomial p2) {
          Polynomial newPolynomial = new Polynomial();
          // We have to find the bigger polynomial so we know how to set the loop
          if (p1.getDegree() >= p2.getDegree()) {
               for (int i = 0; i < p1.getDegree(); i++) {
                    newPolynomial.addToCoefficient(p1.getCoefficient(i)
                              + p2.getCoefficient(i), i);
          } else {
               for (int i = 0; i < p2.getDegree(); i++) {
                    newPolynomial.addToCoefficient(p1.getCoefficient(i)
                              + p2.getCoefficient(i), i);
          return newPolynomial;
     // Here is our subtraction method
     public static Polynomial subtract(Polynomial p1, Polynomial p2) {
          Polynomial newPolynomial = new Polynomial();
          // We have to find the bigger polynomial so we know how to set the loop
          if (p1.getDegree() >= p2.getDegree()) {
               for (int i = 0; i < p1.getDegree(); i++) {
                    newPolynomial.addToCoefficient(p1.getCoefficient(i)
                              - p2.getCoefficient(i), i);
          } else {
               for (int i = 0; i < p2.getDegree(); i++) {
                    // The order is important with subtraction so they cannot be
                    // switched
                    // The equation is allowed to be negative, but the exponent
                    // cannot be
                    newPolynomial.addToCoefficient(p1.getCoefficient(i)
                              - p2.getCoefficient(i), i);
          return newPolynomial;
     // Here is our multiplication method
     public static Polynomial multiply(Polynomial p1, Polynomial p2) {
          Polynomial newPolynomial = new Polynomial();
          if (p1.getDegree() >= p2.getDegree()) {
               for (int i = 0; i < p1.getDegree(); i++) {
                    newPolynomial.addToCoefficient(p1.getCoefficient(i)
                              * p2.getCoefficient(i), i);
          } else {
               for (int i = 0; i < p2.getDegree(); i++) {
                    newPolynomial.addToCoefficient(p1.getCoefficient(i)
                              * p2.getCoefficient(i), i);
          return newPolynomial;
     // Here is our clone method
     public Polynomial clone() {
          Polynomial poly;
          try {
               poly = (Polynomial) super.clone();
          } catch (CloneNotSupportedException e) {
               throw new RuntimeException(
                         "Class does not implement cloneable interface");
          return poly;
}

We've been working with arrays, and we have to write a code that adds, subtracts, and multiplies polynomials. I'm having trouble with a few of the methods. I've assigned m_degree and m_coefficient as the fields I need to use.
Right now, as my code stands, when I test it with a polynomial in main, it doesn't work. So right now, there's a mistake preventing what I have so far from properly functioning.
I am also having trouble writing the following methods:
reserve: We have to allocate memory to the polynomial every time it changes so we make sure we always have enough space to work with it.
nextTerm: We need this to jump to the next term in the polynomial, but I'm not quite sure how to do it. I didn't even realize it was possible.
I'm horrible at commenting and explaining my code, but if you read over it just a little bit, you may be able to get the gist of what I'm trying to do. Thanks for any help, and sorry if I can't explain well.
public class Polynomial implements Cloneable {
private int m_degree;
private double[] m_coefficient;
// This is the default constructor
public Polynomial() {
super();
m_degree = 0;
m_coefficient = new double[5];
// This allows the user to build a polynomial by putting a constant in
public Polynomial(double constant) {
this();
m_coefficient[0] = constant;
public Polynomial(Polynomial source) {
// These are the getters
public double getCoefficient(int degree) {
return m_coefficient[degree];
public int getDegree() {
return m_degree;
// These are the setters
public void addToCoefficient(double amount, int degree) {
m_coefficient[degree] += amount;
public void assignCoefficient(double newCoefficient, int degree) {
m_coefficient[degree] = newCoefficient;
public void clear() {
for (int i = 0; i < m_coefficient.length; i++) {
m_coefficient[i] = 0;
public void reserve(int degree) {
// These are other, useful methods
public int nextTerm(int k) {
int value = 0;
return value;
public double eval(double x) {
double value = 0;
// This goes through all the exponents in the polynomial
for (int i = 0; i < getDegree(); i++) {
// += allows you to add instead of overriding the next term
value += getCoefficient(i) * Math.pow(x, i);
return value;
// Here is our addition method
public static Polynomial add(Polynomial p1, Polynomial p2) {
Polynomial newPolynomial = new Polynomial();
// We have to find the bigger polynomial so we know how to set the loop
if (p1.getDegree() >= p2.getDegree()) {
for (int i = 0; i < p1.getDegree(); i++) {
newPolynomial.addToCoefficient(p1.getCoefficient(i)
+ p2.getCoefficient(i), i);
} else {
for (int i = 0; i < p2.getDegree(); i++) {
newPolynomial.addToCoefficient(p1.getCoefficient(i)
+ p2.getCoefficient(i), i);
return newPolynomial;
// Here is our subtraction method
public static Polynomial subtract(Polynomial p1, Polynomial p2) {
Polynomial newPolynomial = new Polynomial();
// We have to find the bigger polynomial so we know how to set the loop
if (p1.getDegree() >= p2.getDegree()) {
for (int i = 0; i < p1.getDegree(); i++) {
newPolynomial.addToCoefficient(p1.getCoefficient(i)
- p2.getCoefficient(i), i);
} else {
for (int i = 0; i < p2.getDegree(); i++) {
// The order is important with subtraction so they cannot be
// switched
// The equation is allowed to be negative, but the exponent
// cannot be
newPolynomial.addToCoefficient(p1.getCoefficient(i)
- p2.getCoefficient(i), i);
return newPolynomial;
// Here is our multiplication method
public static Polynomial multiply(Polynomial p1, Polynomial p2) {
Polynomial newPolynomial = new Polynomial();
if (p1.getDegree() >= p2.getDegree()) {
for (int i = 0; i < p1.getDegree(); i++) {
newPolynomial.addToCoefficient(p1.getCoefficient(i)
* p2.getCoefficient(i), i);
} else {
for (int i = 0; i < p2.getDegree(); i++) {
newPolynomial.addToCoefficient(p1.getCoefficient(i)
* p2.getCoefficient(i), i);
return newPolynomial;
// Here is our clone method
public Polynomial clone() {
Polynomial poly;
try {
poly = (Polynomial) super.clone();
} catch (CloneNotSupportedException e) {
throw new RuntimeException(
"Class does not implement cloneable interface");
return poly;
}

Writing file through code

Hi,
I want to write data to a file but it gives security error.
AcceccControl Exception file write
I used
FilePermission f=new FilePErmission(String message,"write");
Please send me suggestions.
bye.

Hallo,
From what you say, you are developing an applet. I have not tried to write files from an applet, so it is difficult for me to give you further advice. It may (I do not know for certain) be necessary to set up a FilePermission before starting to write, but it is certainly not sufficient in the mathematical sense. I assume the your message is what you want to write to the file. In this case your proposed code fragment is wrong. According to the API documentation:
public FilePermission(String path,
String actions)
Creates a new FilePermission object with the specified actions. path is the pathname of a file or directory, and actions contains a comma-separated list of the desired actions granted on the file or directory. Possible actions are "read", "write", "execute", and "delete".
A pathname that ends in "/*" (where "/" is the file separator character, File.separatorChar) indicates a directory and all the files contained in that directory. A pathname that ends with "/-" indicates a directory and (recursively) all files and subdirectories contained in that directory. The special pathname "<<ALL FILES>>" matches all files.
A pathname consisting of a single "*" indicates all the files in the current directory, while a pathname consisting of a single "-" indicates all the files in the current directory and (recursively) all files and subdirectories contained in the current directory.
Parameters:
path - the pathname of the file/directory.
actions - the action string.
I do not see anything in this description that says that this function does your writing.

Good ideas for pattern design to achieve small code size?

Hi there,
i am developing a benchmark set for testing Java performance on J2ME. As this is for resource-constrained devices (PDA, cellphone), the code's size should be as small as possible.
Here is the funny question: for example i have a class with name "LoopBenchmark", it has its own configuration such as "loop times", "operationType". The main program, running on a desktop could judge the configuration and load the class, Say with following snippet:
switch(operationType) {
case: ASSIGNMENT
for (int i = 0; i < loopTimes; i++)
int test = 123;
break;
case: ADDITION
for (int i = 0; i < loopTimes; i++)
int test = 3+7;
break;
case: MULTIPLICATION
for (int i = 0; i < loopTimes; i++)
int test = 3*7;
break;
default:
System.out.println("unknown operation type");
I want to create a JAR which could be load to a PDA and running there later. Of course, i hope the JAR could be as small as possible. How can i get just for example:
for (int i = 0; i < loopTimes; i++)
int test = 3+7;
if i know already from the configuration that user wants to run addtion only? I don't want to pack all such SWITCH-CASE handling into the JAR file. Any ideas?
cheers,
eedych

i think that what YATArchivist said goes further than that..
int switchSelector=2;
switch(switchSelector){
case: 0
//effectively not compiled
case: 1
//effectively not compiled
case: 2
//yeah you will get this bit
.....its a guess bassed on faith in the compiler, i admit, but worth a look
very possible to do, and even 20 year old compilers did this, so i see no reaon why java wont, they would calculate the range of values a variable may have at any point and issue warnings if your program was going to generate errors/ contain redundant code

JLabel on JPanel Disappears(Small CODE!)

Um... I had posted a message a earlier just ot make the complex problem simpler. I have made this small version of my massive code and again the JLabel does not get displayed on the JPanel.
This is urgent please help me.
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
class LabelTry
     public static void main(String args[])
          JFrame aFrame= new JFrame("This is a Test");
          aFrame.addWindowListener(new WindowAdapter()
          {public void windowClosing(WindowEvent e)
          {System.exit(0);
          aFrame.setSize(500,500);
          Container c = aFrame.getContentPane();
          JPanel secPanel = new JPanel();
          secPanel.setLayout(null);
          secPanel.setBackground(Color.gray);
          secPanel.setBorder(BorderFactory.createEtchedBorder());
          JLabel aLabel = new JLabel(" ");
          aLabel.setBounds(100,100,10,10);
          aLabel.setBackground(Color.black);
          aLabel.setOpaque(false);
          aLabel.setVisible(true);
          secPanel.setOpaque(false);
          secPanel.add(aLabel);
          c.add(secPanel, BorderLayout.CENTER);
          aFrame.setVisible(true);
     }//end main
}//end class LabelTry

I've got it working now, but I cannot get it to work in a bigger program.
the code that runs properly is as follows
/;code
class LabelTry
     public static void main(String args[])
          JFrame aFrame= new JFrame("This is a Test");
          aFrame.addWindowListener(new WindowAdapter()
          {public void windowClosing(WindowEvent e)
          {System.exit(0);
          aFrame.setSize(500,500);
          Container c = aFrame.getContentPane();
          JPanel secPanel = new JPanel();
          secPanel.setLayout(null);
          secPanel.setBackground(Color.gray);
          secPanel.setOpaque(false);
          secPanel.setBorder(BorderFactory.createEtchedBorder());
          JLabel aLabel = new JLabel(" ");
          aLabel.setBounds(200,200,10,10);
          aLabel.setBackground(Color.black);
          aLabel.setOpaque(true);
          aLabel.setVisible(true);
          secPanel.add(aLabel);
          c.add(secPanel, BorderLayout.CENTER);
          aFrame.setVisible(true);
     }//end main
}//end class LabelTry
//end code

Problem with a small code

Hello , Can anyone plz tell me how do i get this output from this sample code ? im new to java...
public class Fact2
int factorial (int n) {
int res;
System.out.println(n);
if (n == 1) return 1;
res = factorial (n - 1) * n ;
System.out.println("res " + res);
return res;
public static void main (String [] args) {
Fact2 f= new Fact2();
System.out.println("The factorial of this number is " + f.factorial(5));
The output is :
C:\Documents and Settings\AM>java Fact2
5
4
3
2
1
res 2
res 6
res 24
res 120
The factorial of this number is 120
Here , from 5 to 1 is understood and also the last phrase of course , but from where did the variable "res" have these values 2,6,24 ....

2: int factorial (int n) {
3: int res;
4: System.out.println(n);
5: if (n == 1) return 1;
6: res = factorial (n - 1) * n ;
7: System.out.println("res " + res);
8: return res;
9: }
When you call factorial(5) this will happen:
It prints 5 (line 4)
It calls factorial(4) (line 6) - (and waits for it result!!!!!)
factorial(4) shall print 4, and calls factorial(3)
prints 3, calls factorial(2)
prints 2, calls factorial(1)
prints 1, returns 1returns from factorial(1), multiplies it by 2 (line 6), result = 2
prints the result to the screen (line 7)
returns the result (line 8) (thus 2)multiplies the result of factorial(2) with 3 (line 6), result = 6
prints this result, and returns itmultiplies the result of factorial(3) with 4, result = 24
prints this result, and returns itmultiplies the result of factorial(4) with 5, result = 120
prints this result and returns itHope this get things clear to you

Just want to know it this small code is right

Hello everyone, im back :P
well, i've been doing exercises, but i don't have the solution yet...so could you tell me if this code is right? thanks.
About the constructors etc..i think its right, but i not sure about the last method ( distanceFromTwoPoints() )
If i'd like to test this class, i would ask for 4 coord. (x1,y1) and (x2, y2)..
And solved the distance between those two points..well
I don't understand..
On that code how can i calculate the distance from two points if i just have x1 and y1, i mean ...when i wrote that boolean method ( if the two points are equal) the the "p" variable reference is pointing to x1 and y1 , right? maybe that boolean method is wrong too, cuz i want to compare (x1, y1 ) with (x2, y2) well....when i wrote :
this.x1 == p.x1 etc both are references to x1 and y1, so returns always true.
Do i need to write a setMethod to change the values ?
Is that code comparing two points? thats all i want to know...if yes, so how can i test it?
public class Point {
     private double x1;
     private double y1;
     public Point(final double x1, final double y1){
          this.x1 = x1;
          this.y1 = y1;
     public double getX1() {
          return x1;
     public double getY2() {
          return y1;
     public boolean isEqual(final Point p){
          return (this.x1 == p.x1 && this.y1 == p.y1);
     public double distanceFrom2Points (int x1, int y2, Point p){
          return Math.sqrt((this.x1 - p.x1)*(this.x1 - p.x1) + (this.y1 - p.y1)*(this.y1 - p.y1));
I think this code is just working with two coord. x1 and y1 :S where do i put x2 and y2?
"p" is a reference to the x1 and y1 variables, so where are the x2 and y2?
im confused :P
thanks

public class Point {
     private double x;
     private double y;
     public Point(final double x, final double y){
          this.x = x;
          this.y = y;
     public double getX() {
          return x;
     public double getY() {
          return y;
     public boolean isEqual(final Point p){
          return (this.x == p.x && this.y == p.y);
     public double distanceFrom2Points ( Point p){
return Math.sqrt((this.x - p.x) * (this.x - p.x) + (this.y - p.y) * (this.y - p.y));
public class TestingPoint {
     public static void main(String[] args) {
          System.out.print("X1: ");
          double x1 = Teclado.doubleLido();
          System.out.print("Y1: ");
          double y1 = Teclado.doubleLido();
          //Teclad.intLido() reads from the console, something like:
         //Keyboard.intRead(); we use that.
          System.out.print("X2: ");
          double x2 = Teclado.doubleLido();
          System.out.print("Y2: ");
          double y2 = Teclado.doubleLido();
          Point p1 = new Point(x1, y1);
          Point p2 = new Point(x2, y2);
    double distance = p2.distanceFrom2Points(p1.distanceFrom2Points
                                               (x1,x2));
     System.out.println("The distance is "+distance);
}the compilation ERROR says: The method distanceFrom2Points(Point) in the type Point is not applicable for the arguments (double, double)
these are the two classes.
What is wrong ?
thanks!

Can't find the error on this small code :S

Hi , i've just compiled this code and i can't find what is wrong! :(
The compiler is ok, but the output print its not what i was expect.
If u insert 121 (capicua) the answer is: This number its not a capicua :S
what is wrong?
thanks!!
Note: Don't create another code plz.
import java.io.*;
public class Capicua {
     public static void main (String[] args) throws Exception {
          int digit, num;
          int inverted = 0;
               BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
               System.out.print(" Insert number: ");
               num=Integer.parseInt(br.readLine().trim());
               while(num > 0) {
               digit = num % 10;
               num = num /10;
               inverted = inverted * 10 + digit;
               if(num == inverted) {
                    // to be capicua the number inserted must
                    //be equals to the inverted
                    System.out.println("Its Capicua!");
               }else{
                    System.out.println("This number is not a Capicua!");
}

Please use code tags (see button above posting box) when posting code. It makes it much easier to read.
So, it appears that capicua means palindrome--the number reads the same backwards and forwards. Is that correct?
There are ways of doing this without converting the 121 to a number, but I won't explain that unless you want.
I think your problem is this line:
if (num == inverted)
You have changed "num" within your while loop. Therefore, num is no longer the original input 121.
Try adding println statements like this to watch what happens:
while(num > 0) {
digit = num % 10;
num = num /10;
inverted = inverted * 10 + digit;
System.out.println("digit = " + digit);
System.out.println("num = " + num);
System.out.println("inverted = " + inverted);
}

Can somebody please help me with this? Security code issue; very small code

Hi All, Iam a Unix admin and trying to learn Java/weblogic. I have a JSP and iam trying to run on my weblogic 81 Service Pack version 3.
My following code failed to work and giving me some security exceptions. Then in my weblogic console i saw
Domain Wide Security Settings > Anonymous Admin Lookup Enabled
The above checkbox is disabled. When i enabled, it worked. I talked to my company "Security" folks and they do not allow this checkbox to be enabled. they are saying fix your code problem......
if somebody can please let me know what a probable fix would, that be great and very helpful.
try{
Environment env = new Environment();
javax.naming.InitialContext ic = new InitialContext();
MBeanHome home = (MBeanHome) ic.lookup(MBeanHome.LOCAL_JNDI_NAME);
DomainMBean dom = home.getActiveDomain();
Set s = home.getMBeansByType("ServerRuntime");
ServerRuntimeMBean srmb = (ServerRuntimeMBean) s.iterator().next();
WebLogicObjectName on = new WebLogicObjectName(home.getDomainName()+":Location="+srmb.getName()+",Name="+srmb.getName()+",Type=ServerConfig");
//WebLogicObjectName on = new WebLogicObjectName(Name="+srmb.getName()+",Type="ServerConfig",Domain="+home.getDomainName()+",Location="+srmb.getName()+");
ServerMBean server = (ServerMBean) home.getMBean(on);
ClusterMBean cluster = null;
if( server != null)
cluster = server.getCluster();

did i asked such a dumb question? ... :)Well, yes, sort of. The problem description "My following code failed to work and giving me some security exceptions" doesn't have nearly enough details. Such as, what exceptions, what is it supposed to do, what did it do instead, that sort of thing.

Writing a small code in HANA

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