Error CreateImage in for loop array
Hi,
I would like to dynamically create images inside a for loop. It dependent on the array_size that the sevlets will send. Snapshots of code:
for (int i = 0; i < ARRAY_SIZE; i++)
img[i] = Image.createImage("\"/nike" + (i+1) + ".png\"");
}Error:
java.io.IOException
at javax.microedition.lcdui.ImmutableImage.getImageFromStream(+15)
at javax.microedition.lcdui.ImmutableImage.<init>(+20)
at javax.microedition.lcdui.Image.createImage(+8)
at SlidesCanvas.createImages(+138)
at SlidesCanvas.<init>(+146)
at ListSlides.commandAction(+113)
at javax.microedition.lcdui.Display$DisplayAccessor.commandAction(+282)
at javax.microedition.lcdui.Display$DisplayManagerImpl.commandAction(+10)
at com.sun.midp.lcdui.DefaultEventHandler.commandEvent(+68)
at com.sun.midp.lcdui.AutomatedEventHandler.commandEvent(+47)
at com.sun.midp.lcdui.DefaultEventHandler$QueuedEventHandler.run(+250)
Is this a known bug in CreateImage? Or am i doing it in a wrong way?
Herlena
I tried this, it works.
for (int i = 0; i < ARRAY_SIZE; i++) {
img[i] = img.createImage("nike" + (i+1) + ".png");
Hope your problem is solved, Darryl
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Incompatible types error on a for loop
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import java.lang.*;
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import java.io.*; // needed for stream readers
import java.lang.*;
public class testScores extends Object
public static void main(String args[] ) throws Exception
// declare variables for input
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String test_score_input;
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Having errors in basic for loop
Folks
I am tring to write SQL script that implements a block that contains a for-loop which increments a counter from 1 to 10 and inserts the counter value into the results field of the LOOPING table that i have created. i want to insert a null val in place of the counter if the counter value is equal to either 6 or 8.
Below are my work
Table creation
CREATE TABLE LOOPING (Result VARCHAR2(60));
I am expecting a output like this
Result
1
2
3
4
5
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My SCRIPT
BEGIN
FOR COUNTER IN 1..10
IF ((COUNTER = 6 ) AND (COUNTER = 8 ))
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I am getting errors. I am a beginner . Please help me out .
can you point out my errors and explain
And finaly please tell me how to correct it .
Thanks
Guna1) When you get an error, it's always helpful to post the details of that error (the error number and the line number). That makes it far easier for us to help you.
2) Thank you for posting your code and table definition. That definitely helps! In the future, you'll want to use the \ tag (6 characters, all lower case) before and after any code fragments to preserve the white space & indentation. That makes your code far easier to read.
3) Your code fails to compile because
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- you are missing the END IF at the end of your IF statement
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If you correct those three errors, your code will compile
[code]
SQL> ed
Wrote file afiedt.buf
1 BEGIN
2 FOR COUNTER IN 1..10
3 LOOP -- Added
4 IF ((COUNTER = 6 ) AND (COUNTER = 8 ))
5 THEN
6 INSERT INTO looping -- Changed table name
7 VALUES(NULL);
8 ELSE
9 INSERT INTO looping -- Changed table name
10 VALUES(COUNTER);
11 END IF; -- Added
12 END LOOP;
13* END;
SQL> /
PL/SQL procedure successfully completed.
[/code]
4) However, now that the code compiles, you'll have a problem that it does not meet the requirements. It will never insert a NULL value because your IF condition is incorrect. Since this looks like a homework problem, however, I don't want to completely give it away-- I've probably done more than I should have already.
Justin -
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Code:
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java.lang.NullPointerException
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at oracle.ojc.compiler.StatementList.resolveAndCheck(Statement.java:4476)
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For loop array index not from 0
HI!
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Compile Error in Enhanced For Loop
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Can anyone help?
Thanks...
=====================
The compile error:
=====================
MapDict.java:37: package Map does not exist for( Map.Entry entry : glossary.entrySet() ) ^1 error=======================
The code for my class:
=======================
import java.util.Scanner;
import java.util.HashMap;
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L_SQL_TXT:='begin'||CHR(32)||
'for i in ( select '||l_col_list_1||', :in_tst_nm, :l_current_schema from '||in_src_table||') LOOP
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EXECUTE IMMEDIATE l_sql_txt USING in_sav_nm,l_current_schema;
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Error report:
ORA-06550: line 3, column 95:
PL/SQL: ORA-00984: column not allowed here
ORA-06550: line 3, column 7:
PL/SQL: SQL Statement ignored
06550. 00000 - "line %s, column %s:\n%s"
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What am i doing wrong? Please suggestRaunaq wrote:
insert into '||get_test_schema||'.'||in_src_table||' values('||l_col_list_2||',TEST_NM , TEST_CREATED_BY);
This insert statement doesn't look good! As you just passed TEST_NM and TEST_CREATED_BY as in a string. Those must have some values associated with!
Like:- If those 2 are variables then it should be like :-
-- For testing purpose with output !!!
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Declare
l_sql_txt varchar2(32767);
get_test_schema varchar2(20) := 'scott';
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l_sql_txt:='begin'||chr(32)||
'for i in ( select '||l_col_list_1||', :in_tst_nm, :l_current_schema from '||in_src_table||')
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from src_tbl)
loop
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How to handle error within a FOR loop
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For the code:
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How do I write the code below correctly?
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statement. It says I need a semicolon but I can't
seem to correct it and I know the error might not
necessarily be on that line. I'm not sure how this
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import java.text.*;
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int startNum, endNum;
startNumStr=
tNumStr= JOptionPane.showInputDialog(null, "Enter a
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RD-R
� {� -
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I'm outputting a 194-element array from a MATLAB script node into a for loop where the array is indexed then converted into a 8-bit boolean pattern which I'm trying to output using DAQ Assistant. I'm using LabVIEW 8.2 and a PCI 6133 DAQ using a counter(Ctr0InternalOutput) to time the output. The first element of the array goes through the loop perfectly however never makes it's way back through and throws error 200609: Generation cannot be started because the slescted buffer size is too small. Increase the buffer size. After probing the line before DAQ Assistant I confirmed only one element makes it through the loop and then throws this error? I've trying doing the same things with lower lowel DAQmx vi's using a DAQmx configure output buffer vi to override this buffer size problem, but still get the same result(not the error but same data flow problem)? Anybody know what's going on? I've included the vi's I've been working with. Thanks!
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Attachments:
Untitled 22.vi 228 KB
Untitled 34.vi 180 KBHi,
I'm outputting a 194-element array from a MATLAB script node into a for loop where the array is indexed then converted into a 8-bit boolean pattern which I'm trying to output using DAQ Assistant. I'm using LabVIEW 8.2 and a PCI 6133 DAQ using a counter(Ctr0InternalOutput) to time the output. The first element of the array goes through the loop perfectly however never makes it's way back through and throws error 200609: Generation cannot be started because the slescted buffer size is too small. Increase the buffer size. After probing the line before DAQ Assistant I confirmed only one element makes it through the loop and then throws this error? I've trying doing the same things with lower lowel DAQmx vi's using a DAQmx configure output buffer vi to override this buffer size problem, but still get the same result(not the error but same data flow problem)? Anybody know what's going on? I've included the vi's I've been working with. Thanks!
Millie
Attachments:
Untitled 22.vi 228 KB
Untitled 34.vi 180 KB -
I need help with my for loop in this array
Ok well, I can't get my code to work. Also, please remember that this is just my draft so it isnt pretty. I will fix it up later so please look at it. The thing I want to do is look into the array for a time that matches what the user entered and return the toString() of that one. I know there is something wrong with my for loop but I cant figure how to fix it. please help. here is what i have so far:
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in[2]=new Inbound ("",3,"Delayed num2");
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in[6]=new Inbound ("",1,"Canceled num6");
in[7]=new Inbound ("",8,"On Time");
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in[9]=new Inbound ("",10,"On Time");
in[10]=new Inbound ("",11,"Delayed");
in[11]=new Inbound ("",12,"On Time");
in[12]=new Inbound ("",13,"Delayed");
in[13]=new Inbound ("",14,"On Time");
in[14]=new Inbound ("",15,"On Time");
in[15]=new Inbound ("",16,"On Time");
in[16]=new Inbound ("",17,"Canceled");
in[17]=new Inbound ("",18,"On Time");
in[18]=new Inbound ("",19,"On Time");
in[19]=new Inbound ("",20,"Canceled");
in[20]=new Inbound ("",21,"On Time");
in[21]=new Inbound ("",22,"Delayed");
in[22]=new Inbound ("",23,"On Time");
in[23]=new Inbound ("",24,"Cancled");
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timeStr = JOptionPane.showInputDialog ("In military time, what hour do you want?");
time = Integer.parseInt(timeStr);
if (time<=0 || time>24)
JOptionPane.showMessageDialog (null, "Error");
optiStr = JOptionPane.showConfirmDialog (null, "If you want Incoming flights click Yes, but if not click No");
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//(ok this is the for loop i am talking about )
for (int index = 0; index < in.length; index++)
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JOptionPane.showMessageDialog (null, Inbound.tostring()); //return the time asked for
// else JOptionPane.showMessageDialog (null, "else");
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// else
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// {Outbound.run();
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>//(ok this is the for loop i am talking about )
for (int index = 0; index < in.length; index++)
if ( time == Inbound.getTime())
JOptionPane.showMessageDialog (null, Inbound.tostring()); //return the time asked for
Inbound.getTime() is a static method of your Inbound class, that always returns the same value, I presume? As opposed to each of the 25 members of your array in, which have individual values?
Edited by: darb on Mar 26, 2008 11:12 AM -
Passing an array in a for loop to a procedure
I am trying to pass an array in a cursor for loop to a procedure which performs a table insert using the array's contents. Somehow I am missing something, or it is not possible. The compile error states: PLS-00306: wrong number or types in call to 'insert_address' I checked to be sure I am creating the arrays in both cases from similar data objects. Both address and work_address_table contain the same 4 columns with the same data types.
create or replace package work_address as
FUNCTION populate_address return boolean;
procedure insert_address(in_address IN work_address_table%ROWTYPE);
end work_address;
create or replace package body work_address as
function populate_address return boolean is
cursor c1 is
select 'H' as header,
street1 as street
city as city,
NULL as state
from address
where city = 'HANOVER';
TYPE addressT IS TABLE OF c1%ROWTYPE INDEX BY BINARY_INTEGER;
rec1 addressT;
BEGIN
OPEN c1;
FETCH c1 BULK COLLECT INTO rec1 LIMIT 500;
FOR i IN 1..rec1.count LOOP
rec1(i).state := 'US'
insert_address(rec1(i));
exit when c1%notfound;
END LOOP;
CLOSE c1;
return TRUE;
END populate_address;
PROCEDURE insert_address(in_address IN work_address_table%ROWTYPE) IS
BEGIN
INSERT INTO work_address_table
VALUES (in_address.header,
in_address.street,
in_address.city,
in_address.state);
COMMIT;
END insert_address;
END work address;
/Both address and work_address_table contain the same 4 columns with the same data types.Are you 100% sure about this?
SQL> declare
cursor c1
is
select 1 deptno, dummy dname, 'Loc' location from dual;
type addresst is table of c1%rowtype
index by binary_integer;
rec1 addresst;
procedure p (d dept%rowtype)
as
begin
dbms_output.put_line(d.dname);
end p;
begin
rec1 (1).dname := 'z';
p (rec1 (1));
end;
z
PL/SQL procedure successfully completed.but changing just the first column of the cursor:
SQL> declare
cursor c1
is
select 'xy' deptno, dummy dname, 'Loc' location from dual;
type addresst is table of c1%rowtype
index by binary_integer;
rec1 addresst;
procedure p (d dept%rowtype)
as
begin
dbms_output.put_line(d.dname);
end p;
begin
rec1 (1).dname := 'z';
p (rec1 (1));
end;
Error at line 3
ORA-06550: line 20, column 3:
PLS-00306: wrong number or types of arguments in call to 'P'
ORA-06550: line 20, column 3:
PL/SQL: Statement ignored -
For loop issue and error exception
I am finishing up a program and having a few issues....I can send my instructions so it may seem easier to what I want...the first issue deals with the for loop for the 2nd for loop in the actionperformed when i click on go it does not change any of the boxes to yellow
Also when I check for errors it does not check with the code I have...I know it says on the instructions to use try\catch but I am just going to use if statements because I am not very familar with the try\catch and will accept some points takin off...any help with this by tonight id really appreciate it as long as noone is too busy...Thanks
instructions:
This will incorporate arrays, for loops, and Frames all in one.
Create a panel containing an array of 16 TextArea components that change color to correspond with the start, stop, and step values entered by the user. Perform the following tasks to create the Checkerboard Array application shown below. When the user enters the start, stop, and step fields and then clicks the Go button, the results are also shown below.
1. Call your application Checkerboard.java
2. You will need the following variables� declare them as private:
a. 16 component TextArea array
b. a Panel to hold the array
c. 3 TextField components with length of 10
d. 3 int variables to receive the start, stop, and step values
e. 3 Labels to display the words Start, Stop, and Step
f. a Go button
g. a Clear button
h. a Panel to hold the 3 TextFields, 3 Labels, and the 2 Buttons
3. Create a constructor method to:
a. construct each of the components declared above and initializes the start, stop, and step variables to zero (when constructing the TextArea components, use the following parameters: null, 3, 5, 3)
b. set the Frame layout to BorderLayout
c. write a for loop to loop the array and set each of the 16 TextArea components in that array so they cannot be edited. In the same loop, set each of the TextArea components text to be 1 more than the index number. Also in this same loop, set the background of each of the TextArea components to white.
d. set the Panel for the TextArea components to GridLayout with 4 rows, 4 columns, and both gaps set to 10
e. set the Panel for the TextFields, Labels, and button to GridLayout with 3 rows, 3 columns, and both gaps set to 5
f. add the components to their respective Panels
g. make the buttons clickable
h. place the Panels in the Frame� put one in the NORTH and one in the CENTER
i. Enter the addWindowListener() method described in the chapter� this is the method that overrides the click of the X so it terminates the application
4. In your actionPerformed() method:
a. convert the data in your TextFields to int and store them in the variables declared above
b. write a loop that goes through the array setting every background color to blue
c. write another loop that�s based on the user inputs. Each time the loop is executed, change the background color to yellow (so� start your loop at the user�s specified starting condition. You�ll stop at the user�s specified stopping value. You�ll change the fields to yellow every time you increment your loop based on the step value. REMEMBER: Your displayed values are 1 off from your index numbers!!)
5. Write a main() method that creates an instance of the Checkerboard Frame.
a. set the bounds for the frame to 50, 100, 300, 400
b. set the title bar caption to Checkerboard Array
c. use the setVisible() method to display the application Frame during execution
6. After you get all of this complete, include error handling to make sure:
a. the values entered in the TextFields are valid integers
b. the start value is greater than or equal to 1 and less than or equal to 16
c. the stop value is greater than or equal to 1 and less than or equal to 16
d. the step value is greater than or equal to 1 and less than or equal to 16
e. the start condition is less than the stop condition
f. when an error occurs, give an error message in a dialog box that is specific to their error, remove the text from the invalid field, and put the cursor in that field so the user has a chance to re-enter� this can be accomplished by using multiple try/catch statements
g. only change the colors if the numbers are valid
7. Create a clear button as seen in the example below. This button should:
a. clear out all 3 TextFields
b. change the background color of all TextArea array elements to white
c. put the cursor in the start field
8. Document!!
my code is:
//packages to import
import javax.swing.JOptionPane;
import java.awt.*;
import java.awt.event.*;
public class Checkerboard extends Frame implements ActionListener
private Panel topPanel;
private TextArea topDisplay[];
private Panel bottomPanel;
private TextField startField = new TextField(10);
private TextField stopField = new TextField(10);
private TextField stepField = new TextField(10);
private Label startLabel = new Label ("Start");
private Label stopLabel = new Label ("Stop");
private Label stepLabel = new Label ("Step");
private Button goButton;
private Button clearButton;
private boolean clearText;
private boolean first;
private int start;
private int stop;
private int step;
//constructor methods
public Checkerboard()
//construct components and initialize beginning values
topPanel = new Panel();
topDisplay = new TextArea[16];
goButton = new Button("Go");
clearButton = new Button("Clear");
first = true;
bottomPanel = new Panel();
int start = 0;
int stop = 0;
int step = 0;
bottomPanel.add(startField);
bottomPanel.add(stopField);
bottomPanel.add(stepField);
bottomPanel.add(startLabel);
bottomPanel.add(stopLabel);
bottomPanel.add(stepLabel);
bottomPanel.add(goButton);
goButton.addActionListener(this);
bottomPanel.add(clearButton);
clearButton.addActionListener(this);
clearText = true;
//set layouts for the Frame and Panels
setLayout(new BorderLayout());
topPanel.setLayout(new GridLayout(4, 4, 10, 10));
bottomPanel.setLayout(new GridLayout(3, 3, 5, 5));
//construct the Display
for(int i = 0; i <= 15; i++)
topDisplay[i] = new TextArea(null, 3, 5, 3);
topDisplay.setText(String.valueOf(i+1));
topDisplay[i].setEditable(false);
topPanel.add(topDisplay[i]);
//add components to frame
add(topPanel, BorderLayout.NORTH);
add(bottomPanel, BorderLayout.CENTER);
//allow the x to close the application
addWindowListener(new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
} //end window adapter
public static void main(String args[])
Checkerboard f = new Checkerboard();
f.setTitle("Checkerboard Array");
f.setBounds(50, 100, 300, 400);
f.setLocationRelativeTo(null);
f.setVisible(true);
} //end main
public void actionPerformed(ActionEvent e)
//test go
String arg = e.getActionCommand();
//go button was clicked
if(arg.equals("Go"))
//convert data in TextField to int
int start = Integer.parseInt(startField.getText());
int stop = Integer.parseInt(stopField.getText());
int step = Integer.parseInt(stepField.getText());
if((start <= 1) && (start > 16))
JOptionPane.showMessageDialog(null, "You must enter start between 1 and 16", "Error", JOptionPane.ERROR_MESSAGE);
startField.setText(" ");
startField.requestFocus();
if ((stop < 1) && (stop > 16))
JOptionPane.showMessageDialog(null, "You must enter stop between 1 and 16", "Error", JOptionPane.ERROR_MESSAGE);
stopField.setText(" ");
stopField.requestFocus();
if ((step < 1) && (step > 16))
JOptionPane.showMessageDialog(null, "You must enter step between 1 and 16", "Error", JOptionPane.ERROR_MESSAGE);
stepField.setText(" ");
stepField.requestFocus();
if (start < stop)
JOptionPane.showMessageDialog(null, "Stop cannot be larger than start", "Error", JOptionPane.ERROR_MESSAGE);
startField.setText(" ");
stopField.setText(" ");
stepField.setText(" ");
startField.requestFocus();
for(int i = 0; i <=16; i++)
topDisplay[i].setBackground(Color.blue);
for(int i = start; i <= stop; step++)
topDisplay[i].setBackground(Color.yellow);
} //end the if go
//clear button was clicked
if(arg.equals("Clear"))
clearText = true;
startField.setText("");
stopField.setText("");
stepField.setText("");
first = true;
setBackground(Color.white);
startField.requestFocus();
} //end the if clear
}//end action listener
}//end classgot the yellow boxes to come up but just one box.....so is there something wrong with my yellow set background because I am not seeing any more errors
//packages to import
import javax.swing.JOptionPane;
import java.awt.*;
import java.awt.event.*;
public class Checkerboard extends Frame implements ActionListener
private Panel topPanel;
private TextArea topDisplay[];
private Panel bottomPanel;
private TextField startField = new TextField(10);
private TextField stopField = new TextField(10);
private TextField stepField = new TextField(10);
private Label startLabel = new Label ("Start");
private Label stopLabel = new Label ("Stop");
private Label stepLabel = new Label ("Step");
private Button goButton;
private Button clearButton;
private boolean clearText;
private boolean first;
private int start;
private int stop;
private int step;
//constructor methods
public Checkerboard()
//construct components and initialize beginning values
topPanel = new Panel();
topDisplay = new TextArea[16];
goButton = new Button("Go");
clearButton = new Button("Clear");
first = true;
bottomPanel = new Panel();
int start = 0;
int stop = 0;
int step = 0;
bottomPanel.add(startField);
bottomPanel.add(stopField);
bottomPanel.add(stepField);
bottomPanel.add(startLabel);
bottomPanel.add(stopLabel);
bottomPanel.add(stepLabel);
bottomPanel.add(goButton);
goButton.addActionListener(this);
bottomPanel.add(clearButton);
clearButton.addActionListener(this);
clearText = true;
//set layouts for the Frame and Panels
setLayout(new BorderLayout());
topPanel.setLayout(new GridLayout(4, 4, 10, 10));
bottomPanel.setLayout(new GridLayout(3, 3, 5, 5));
//construct the Display
for(int i = 0; i <= 15; i++)
topDisplay[i] = new TextArea(null, 3, 5, 3);
topDisplay.setText(String.valueOf(i+1));
topDisplay[i].setEditable(false);
topPanel.add(topDisplay[i]);
//add components to frame
add(topPanel, BorderLayout.NORTH);
add(bottomPanel, BorderLayout.CENTER);
//allow the x to close the application
addWindowListener(new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
} //end window adapter
public static void main(String args[])
Checkerboard f = new Checkerboard();
f.setTitle("Checkerboard Array");
f.setBounds(50, 100, 300, 400);
f.setLocationRelativeTo(null);
f.setVisible(true);
} //end main
public void actionPerformed(ActionEvent e)
boolean done = false;
//test go
String arg = e.getActionCommand();
//go button was clicked
if(arg.equals("Go"))
//convert data in TextField to int
int start = Integer.parseInt(startField.getText());
int stop = Integer.parseInt(stopField.getText());
int step = Integer.parseInt(stepField.getText());
while(!done)
try
if((start <= 1) && (start > 16)) throw new NumberFormatException();
else done = true;
} //end try
catch (NumberFormatException f)
JOptionPane.showMessageDialog(null, "You must enter start between 1 and 16", "Error", JOptionPane.ERROR_MESSAGE);
startField.setText(" ");
startField.requestFocus();
} //end catch
try
if ((stop < 1) && (stop > 16)) throw new NumberFormatException();
else done = true;
} //end try
catch (NumberFormatException f)
JOptionPane.showMessageDialog(null, "You must enter stop between 1 and 16", "Error", JOptionPane.ERROR_MESSAGE);
stopField.setText(" ");
stopField.requestFocus();
} //end catch
try
if ((step < 1) && (step > 16)) throw new NumberFormatException();
else done = true;
} //end try
catch (NumberFormatException f)
JOptionPane.showMessageDialog(null, "You must enter step between 1 and 16", "Error", JOptionPane.ERROR_MESSAGE);
stepField.setText(" ");
stepField.requestFocus();
} //end catch
try
if (start > stop) throw new NumberFormatException();
else done = true;
} //end try
catch (NumberFormatException f)
JOptionPane.showMessageDialog(null, "Stop cannot be larger than start", "Error", JOptionPane.ERROR_MESSAGE);
startField.setText(" ");
stopField.setText(" ");
stepField.setText(" ");
startField.requestFocus();
} //end catch
} //end while
for(int i = 0; i <=15; i++)
topDisplay[i].setBackground(Color.blue);
for(int i = start; i <= stop; step++)
topDisplay[i].setBackground(Color.yellow);
} //end the if go
//clear button was clicked
if(arg.equals("Clear"))
clearText = true;
startField.setText("");
stopField.setText("");
stepField.setText("");
first = true;
setBackground(Color.white);
startField.requestFocus();
} //end the if clear
}//end action listener
}//end class
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