Krithika Beri

I need to identify any colour present on the ph screen. In order to do this I am opening the ph's camera on start up and then want to identify the colour present on the middle of the screen marked by cross hairs. To do this I need to divide the "SurfaceView" to pixels. Please help me with this.

I tried that. It did not help

I am using Netbeans for my current project. I require to update a jtable based on what the user selects from a JTree consisting of all the files in his computer. The problem is that this JTable is not getting updated.
I am creating a new model and adding it each time. When I say getValueAt(x,Y) from the new value, it is giving me proper updation but this is not visible in UI. Please help


void tablenode(TreePath[] selectednodes) {Object selectedValues[][] = new Object[10][3]; jTable1.invalidate(); for (int i=0;i<selectednodes.length;i++) { File filePath=new File(selectednodes[i].toString().replace("\\", "").replace("Computer,", ""). replace(", ", "/").replace("]", "").replace("[","")); String fileName=filePath.getName(); selectedValues[i][0]=fileName; selectedValues[i][1]=null; selectedValues[i][2]=null; jTable1.updateUI(); String columns[]={ "File Name", "Display Name", "Play Order" }; DefaultTableModel tableModel = new DefaultTableModel(selectedValues, columns); tableModel.fireTableDataChanged(); jTable1.setModel(tableModel); jTable1.validate(); jTable1.repaint(); jTable1.updateUI(); System.out.println("----------------"+jTable1.getModel().getValueAt(0, 0));

My requirement is that there is a process which is taking place which takes quite some time. The process starts when a button is clicked. So when the button is clicked, I want to add a Label before the actual process starts to show that the process is in progress. But what i found is that, after the button action is completed only then the JFrame is updated with the label. Please help

I am trying to push installation apk's into an android device from cmd through java. I want to know how to set path to the adb from java to do the same. Can the adb be packaged along with the java project?

I am trying to install apk's into any android device. The whole software is supposed to run in any system. I do not want to install the entire sdk everytime but only the adb. All this I plan to run from java. Now my problem is I am unable to set the class path for this adb. Does it require the whole sdk to be installed?

Sorry if there is existing db then res=0 if it is not there then it is 1
if i use the existing database it is saying that file is encrypted or it is not a database

I want to open the existing database file and write the data into it . I am using the sqlite database.
Here is the snippet:
Class.forName("org.sqlite.JDBC"); conn = DriverManager.getConnection("jdbc:sqlite:" + filesave); if (res == 1) { statement = conn.createStatement(); statement.execute("drop table if exists logical"); statement.execute("drop table if exists physical"); statement.execute("drop table if exists SQLITEADMIN_QUERIES"); statement.execute("drop table if exists android_metadata"); statement .executeUpdate("CREATE TABLE logical (_id INTEGER DEFAULT '1' PRIMARY KEY AUTOINCREMENT NOT NULL,uri UNIQUE,description,post_requisite,pre_requisite,acl,passwd,is_locked,class,rating,play_order,params,status,extras,name,uid,updated_at,price,tags);"); statement .executeUpdate("create table physical (_id INTEGER DEFAULT '1' PRIMARY KEY AUTOINCREMENT NOT NULL,uri UNIQUE,src,mime_type,nav_labeltext,nav_labelimg,extras,uid,publisher_id,updated_at);"); statement .executeUpdate("create table SQLITEADMIN_QUERIES(ID INTEGER PRIMARY KEY,NAME VARCHAR(100),SQL TEXT);"); statement .executeUpdate("create table \"android_metadata\" (\"locale\" TEXT DEFAULT 'en_US');"); statement .executeUpdate("insert into \"android_metadata\" VALUES ('en_US');"); statement .executeUpdate("CREATE INDEX edutorcontentlogical_uri ON edutorcontentlogical (uri);"); statement .executeUpdate("CREATE INDEX edutorcontentphysical_uri ON edutorcontentphysical (uri);"); } preparedStmt = conn .prepareStatement("insert into logical values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);"); preparedStmt1 = conn .prepareStatement("insert into physical values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);"); System.out.println("eeeeeeeeeeeeeeeeeeeeeeeeerrrrrrrrrrrrrrrrrrrrrrrrrrrr"); buildTree(rootElement); conn.close(); } catch (Exception e) { System.err.println("Error: " + e.getMessage()); }
i am asking if you want to write the data into existing db, if there is existing db then res=1 and if it is not there res=0

I have a JTree and a button in the UI called up. When i select a node and say up, it is supposed to move that node up. The problem is that the first time it works fine but the second time that node disappears completely from the tree.
if (e.getSource() == down) { DefaultTreeModel model = (DefaultTreeModel) tree.getModel(); TreePath tp = tree.getSelectionPath(); if (tp == null) { JOptionPane.showMessageDialog(null, "No node selected", "Error", JOptionPane.ERROR_MESSAGE); return; } int indexmoved = tp.getPathCount(); String nodemoved = tp.getLastPathComponent().toString(); String nodemovedparent = tp.getPathComponent(indexmoved - 2) .toString(); DefaultMutableTreeNode select = (DefaultMutableTreeNode) tp .getLastPathComponent(); int index = select.getParent().getIndex(select); TreeNode parent = select.getParent(); int child_no = parent.getChildCount() - 1; if (index != child_no) { DefaultMutableTreeNode[] children = null; if (select.getAllowsChildren() && select.getChildCount() > 0) { children = new DefaultMutableTreeNode[select .getChildCount()]; int i = 0; Enumeration enumeration = select.children(); while (enumeration.hasMoreElements()) { // Downcast needed DefaultMutableTreeNode child = (DefaultMutableTreeNode) enumeration .nextElement(); children[i] = child; ++i; } } model.removeNodeFromParent(select); DefaultMutableTreeNode newNode = new DefaultMutableTreeNode( select); // Add picked child nodes after moving up if (children != null) { for (DefaultMutableTreeNode childNode : children) { newNode.add(childNode); } } model.insertNodeInto(newNode, (MutableTreeNode) parent, index + 1); DefaultXMLTreeNode lastPathComponent = (DefaultXMLTreeNode) tp .getLastPathComponent(); Node selectedNode = lastPathComponent.getNode(); Node nodeParent = selectedNode.getParentNode(); Node nodebelow = selectedNode.getNextSibling(); Node nodebelowbelow = nodebelow.getNextSibling(); int playorder_sel = 0, playorder_below = 0; NamedNodeMap elementAtt_selnode = selectedNode.getAttributes(); NamedNodeMap elementAtt_selabove = nodebelow.getAttributes(); playorder_sel = Integer.parseInt(elementAtt_selnode .getNamedItem("playOrder").getNodeValue()); playorder_below = Integer.parseInt(elementAtt_selabove .getNamedItem("playOrder").getNodeValue()); if (playorder_below != playorder_sel) { playorder_sel = playorder_sel + 1; elementAtt_selnode.getNamedItem("playOrder").setNodeValue( playorder_sel + ""); playorder_below = playorder_sel - 1; elementAtt_selabove.getNamedItem("playOrder").setNodeValue( playorder_below + ""); } nodeParent.insertBefore(selectedNode, nodebelowbelow); TreeNode[] nodes = model.getPathToRoot(newNode); tree.setSelectionPath(new TreePath(nodes)); } else { JOptionPane.showMessageDialog(null, "Selected node is last node.", "Error", JOptionPane.ERROR_MESSAGE); } } }

Thank you so much, I got it..

How do i get the values of row, col and value?


import javax.swing.table.AbstractTableModel; import org.w3c.dom.NamedNodeMap; import org.w3c.dom.Node; class DetailsTableModel extends AbstractTableModel { Node node; protected String[] columnNames = new String[] { "Name", "Value" }; protected Class[] columnClasses = new Class[] { String.class, String.class }; public DetailsTableModel(Node node) { this.node = node; } // These are easy methods public int getColumnCount() { return 2; } // A constant for this model public int getRowCount() { NamedNodeMap elementAttributes = node.getAttributes(); int numAttributes = elementAttributes.getLength(); return numAttributes; } // Information about each column public String getColumnName(int col) { return columnNames[col]; } public Class getColumnClass(int col) { return columnClasses[col]; } // The method that must actually return the value of each cell public Object getValueAt(int row, int col) { NamedNodeMap elementAttributes2 = node.getAttributes(); Node item = elementAttributes2.item(row); switch (col) { case 0: return item.getNodeName(); case 1: return item.getNodeValue(); default: return null; } } @Override public boolean isCellEditable(int row, int column) { if (column == 0) { return false; } return true; } public void setValueAt(Object value, int row, int col) { fireTableCellUpdated(row, col); System.out.println("Setting value at " + row + "," + col + " to " + value + " (an instance of " + value.getClass() + ")"); } }

I have tried what you have told me but it still does not seem to work

I am not still able to get my head around the problem. i already added the tableChanged method and told the model to listen to it. Then why isn't it listening?

This is my DetailsTableModel. Could you tell me where to add the fire.... command as I have tried adding it and it is not working properly.


import javax.swing.table.AbstractTableModel; import org.w3c.dom.NamedNodeMap; import org.w3c.dom.Node; class DetailsTableModel extends AbstractTableModel { Node node; protected String[] columnNames = new String[] { "Name", "Value" }; protected Class[] columnClasses = new Class[] { String.class, String.class }; public DetailsTableModel(Node node) { this.node = node; } // These are easy methods public int getColumnCount() { return 2; } // A constant for this model public int getRowCount() { NamedNodeMap elementAttributes = node.getAttributes(); int numAttributes = elementAttributes.getLength(); return numAttributes; } // Information about each column public String getColumnName(int col) { return columnNames[col]; } public Class getColumnClass(int col) { return columnClasses[col]; } // The method that must actually return the value of each cell public Object getValueAt(int row, int col) { NamedNodeMap elementAttributes2 = node.getAttributes(); Node item = elementAttributes2.item(row); switch (col) { case 0: return item.getNodeName(); case 1: return item.getNodeValue(); default: return null; } } @Override public boolean isCellEditable(int row, int column) { if (column == 0) { return false; } return true; } }

My tables are not responding when there is any change. Please help


public void createTables() throws IOException { DetailsTableModel model = new DetailsTableModel(selNCXNode); model.addTableModelListener(this); table_node.setModel(model); Tabpane1.getViewport().add(table_node); pane2.add(Tabpane1); Tabpane1.setBounds(810, 20, 543, 210); Tabpane2.getViewport().add(table_content); pane2.add(Tabpane2); Tabpane2.setBounds(810, 240, 543, 230); } public void tableChanged(TableModelEvent e) { System.out.println("Tablechanged method"); String editedNodeName = (String) table_node.getModel().getValueAt( e.getFirstRow(), 0); NamedNodeMap elementAttributessw = selNCXNode.getAttributes(); int numAttribu = elementAttributessw.getLength(); for (int j = 0; j < numAttribu; j++) { Node attribute = elementAttributessw.item(j); if (attribute.getNodeName() == editedNodeName) { attribute.setNodeValue((String) table_node.getModel() .getValueAt(e.getFirstRow(), e.getColumn())); } } }