VU Help - Java forum

how PageSpeed Insights works for your page analysis breif discussion

Mon, 19 Jan 2015 10:35:40 -0500

PageSpeed Insights is very good thing which tell u that how much time your site take to load on internet. It gives a breif variaty and google play a good role on it. Let's see how it works.
It has two parts

1 Mobile Analysis
2 Desktop Analysis

Mobile anlysis shows that how your site should be loaded in to the Andriod smart phone and how much time it takes
Desktop for PageSpeed Insights shows that how your website load on desktop system and how much time it takes.

What you have to do is simply enter the url of your website and then click on analysis button
After that what it shows the score out of 100
If you do analysis for this website http://www.vuhelp.net/forum.php
then what you are going to get is the 63/100 for mobile and 62/100 for desktop
Let's see what analysis we got for this website.
First for Mobile loading for vuhelp.net
63 / 100Speed

Should Fix:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 4 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
http://ajax.googleapis.com/ajax/libs/jqu...ery.min.js
http://www.vuhelp.net/…entscript/vbullet...t.js?v=422
http://www.vuhelp.net/…ipt/jquery/jquery...b.js?v=422
http://www.vuhelp.net/clientscript/vbull...e.js?v=422
Optimize CSS Delivery of the following:
http://www.vuhelp.net/…t/jquery/jquery.m....css?v=422
http://www.vuhelp.net/…style00002l/main-...1421504539
Hide details
Enable compression
Show how to fix
Consider Fixing:
Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 9% of the final above-the-fold content could be rendered with the full HTML response see screenshot.
Hide details
Leverage browser caching
Show how to fix
Reduce server response time
Show how to fix
Minify JavaScript
Show how to fix
4 Passed Rules
Show details

Now for the Desktop loading for the vuhelp.net
62 / 100Suggestions Summary

Should Fix:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 11 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
http://www.vuhelp.net/…r-dom-event/yuilo...t.js?v=422
http://www.vuhelp.net/…t/yui/connection/...n.js?v=422
http://www.vuhelp.net/clientscript/vbull...e.js?v=422
http://www.vuhelp.net/clientscript/vbull...5.js?v=422
http://rt.trafficfacts.com/…b0e8eebfbe5b...26;c=s;v=5
http://script.opentracker.net/?site=www.vuhelp.net
http://s10.histats.com/js15.js
http://s4.histats.com/…tp%3A%2F%2Fwww.vu...rum.php&@w
http://www.statcounter.com/counter/counter.js
http://resources.infolinks.com/js/infolinks_main.js
http://resources.infolinks.com/js/3008.36a/ice.js
Optimize CSS Delivery of the following:
http://www.vuhelp.net/…bulletin_css/styl...rollup.css
http://www.vuhelp.net/…tin_css/style0000...rollup.css
http://www.vuhelp.net/…/style00001l/addi...1421679785
Hide details
Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
http://s10.histats.com/js15.js (expiration not specified)
http://www.vuhelp.net/…tin_css/style0000...rollup.css (expiration not specified)
http://www.vuhelp.net/…bulletin_css/styl...rollup.css (expiration not specified)
http://www.vuhelp.net/images/buttons/collapse.png (expiration not specified)
http://www.vuhelp.net/images/buttons/collapse_40b.png (expiration not specified)
http://www.vuhelp.net/images/buttons/lastpost-right.png (expiration not specified)
http://www.vuhelp.net/images/buttons/newbtn_middle.png (expiration not specified)
http://www.vuhelp.net/images/buttons/search.png (expiration not specified)
http://www.vuhelp.net/images/gradients/g...y-down.png (expiration not specified)
http://www.vuhelp.net/images/gradients/grey-up.png (expiration not specified)
http://www.vuhelp.net/…selected-tab-grad...-alpha.png (expiration not specified)
http://www.vuhelp.net/images/icons/I2.gif (expiration not specified)
http://www.vuhelp.net/images/icons/icon14.png (expiration not specified)
http://www.vuhelp.net/images/icons/plain.png (expiration not specified)
http://www.vuhelp.net/images/misc/black_..._arrow.png (expiration not specified)
http://www.vuhelp.net/images/misc/forum_stats.png (expiration not specified)
http://www.vuhelp.net/images/misc/legend.png (expiration not specified)
http://www.vuhelp.net/images/misc/navbit-home.png (expiration not specified)
http://www.vuhelp.net/images/misc/vbulletin4_logo.png (expiration not specified)
http://www.vuhelp.net/images/statusicon/category-16.png (expiration not specified)
http://www.vuhelp.net/images/statusicon/...ink-16.png (expiration not specified)
http://www.vuhelp.net/images/statusicon/...new-16.png (expiration not specified)
http://www.vuhelp.net/images/statusicon/...old-16.png (expiration not specified)
http://www.vuhelp.net/images/statusicon/...old-48.png (expiration not specified)
http://www.vuhelp.net/images/statusicon/post_old.gif (expiration not specified)
http://www.vuhelp.net/images/statusicon/...old-48.png (expiration not specified)
http://connect.facebook.net/en_US/all.js (20 minutes)
https://apis.google.com/js/api.js (30 minutes)
https://apis.google.com/js/plusone.js (30 minutes)
http://pagead2.googlesyndication.com/pag...ygoogle.js (60 minutes)
http://pagead2.googlesyndication.com/pagead/osd.js (60 minutes)
http://resources.infolinks.com/js/infolinks_main.js (60 minutes)
https://oauth.googleusercontent.com/…e:r...ha1.js?c=2 (60 minutes)
Hide details
Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 152.7KiB (73% reduction).
Compressing http://www.vuhelp.net/…bulletin_css/styl...rollup.css could save 54.9KiB (82% reduction).
Compressing http://www.vuhelp.net/…r-dom-event/yuilo...t.js?v=422 could save 40.5KiB (67% reduction).
Compressing http://www.vuhelp.net/clientscript/vbull...e.js?v=422 could save 35.9KiB (70% reduction).
Compressing http://www.vuhelp.net/…tin_css/style0000...rollup.css could save 9.4KiB (80% reduction).
Compressing http://www.vuhelp.net/…t/yui/connection/...n.js?v=422 could save 8.6KiB (66% reduction).
Compressing http://www.vuhelp.net/clientscript/vbull...5.js?v=422 could save 3.4KiB (63% reduction).
Hide details
Consider Fixing:
Optimize images
Show how to fix
Prioritize visible content
Show how to fix
Reduce server response time
Show how to fix
Minify JavaScript
Show how to fix
Minify HTML
Show how to fix
2 Passed Rules
Show details

It shows the rules and gives colours if u got the red colour that's mean you need to make few changes and fix the errors if you get the green colour that's mean your site is fine

How to run a java file that creaded in Ntebeans in console

Mon, 26 Sep 2011 04:17:36 -0400

How to run a java file that creaded in Ntebeans in console
In command prompt, point to the folder in which your java file exists. Now

c:\yourfolder> javac filename.java
c:\yourfolder> java filename

[video=youtube;f6AgJ6r5QRQ]http://www.youtube.com/watch?v=f6AgJ6r5QRQ&feature=player_detailpage[/video]

double buffering in java 2011-12

Mon, 12 Sep 2011 08:30:17 -0400

double buffering in java 2011-12

i write the code of double buffering in java this is write code

Code:
public Game(){
    super("test");
    setSize(495,429);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);
    try{
    img = ImageIO.read(new File("background.png"));
    }
    catch (IOException e){
    }
     
    start1 = new MovePlayer();
    start2 = new MoveEnemy();
    start2.start();
    start1.start();
     
    addKeyListener(new ButtonListener1());
     
    }//close constructor
    public void paint(Graphics g){
     
    super.paint(g);
     
    g.setColor(Color.RED);
    g.fillRect(player.x,player.y,player.width,player.height);//player
    g.setColor(Color.BLACK);
    g.fillRect(enemy.x,enemy.y,enemy.width,enemy.height);//enemy
    g.drawImage(img, 0 - focusX, 0 - focusY, this);//background image
     
     
     
     
    }//close paint

Using wait and notify? in java 2011-12

Mon, 12 Sep 2011 08:29:01 -0400

Using wait and notify? in java 2011-12

Code:
try
{
Thread.sleep(5000); // do nothing for 5000 milLiseconds (5 seconds)
}
catch(InterruptedException e)
{
e.printStackTrace();
}

text wrap in java 2011-12

Mon, 12 Sep 2011 08:27:54 -0400

text wrap in java 2011-12

i am trying to create a text wrapping method
soemthing like this

Code:
public void textwrap( String text, int width){
     
    }

How find the data in ArrayList? 2011-12

Sat, 03 Sep 2011 17:21:07 -0400

How find the data in ArrayList? 2011-12

i am write a New code in c++ who find the data in the array list

Code:
package student;
import java.io.*;
import java.util.*;
 
public class StudentProtocol {
 
	private String id;
	private String name;
	private String module_name;
	private String marks;
	BufferedReader userInput=new BufferedReader(new InputStreamReader(System.in));
	ArrayList myArr =new ArrayList();
 
	//constructor	
	public StudentProtocol(String id,String name,String module_name,String marks){
		this.id=id;
		this.name=name;
		this.module_name=module_name;
		this.marks=marks;
	}
 
	//
	public String getId(){
		return id;
	}
 
	public String getName(){
		return name;
	}
 
	public String getModuleName(){
		return module_name;
	}
 
	public String getMarks(){
		return marks;
	}
 
	//mutator
 
	public void setId(String id){
		this.id=id;
	}
 
	public void setName(String name){
		this.name=name;
	}
 
	public void setModuleName(String module_name){
		this.module_name=module_name;
	}
 
	public void setMarks(String marks){
		this.marks=marks;
	}
 
	public void displayStudentDetails(){
		System.out.println("ID is "+id);
		System.out.println("Name is "+name);
		System.out.println("Module name is "+module_name);
		System.out.println("Marks is "+marks);
	}
 
	public void addDetails()throws IOException{
		BufferedReader userInput=new BufferedReader(new InputStreamReader(System.in));
		ArrayList myArr =new ArrayList();
		myArr.add(id);
		myArr.add(name);
		myArr.add(module_name);
		myArr.add(marks);
 
		System.out.println("Adding a new student");
		System.out.println("Enter id:");
		String id = userInput.readLine();
		System.out.println("Enter name:");
		String name = userInput.readLine();
		System.out.println("Enter module name:");
		String module_name = userInput.readLine();
		System.out.println("Enter marks:");
		String marks = userInput.readLine();		
		System.out.println("ID is "+id);
		System.out.println("Name is "+name);
		System.out.println("Module name is "+module_name);
		System.out.println("Marks is "+marks);
 
 
	}
 
	public  void removeDetails(ArrayList myArr) throws IOException{
		displayStudentDetails();
		//BufferedReader userInput = new BufferedReader (new InputStreamReader (System.in));
 
		System.out.println("Please,enter a student id to delete:");
		String id =userInput.readLine();
		System.out.println("Size of array before removing item:"+myArr.size());
		myArr.remove(myArr);
		System.out.println(id+"has been removed!");
		System.out.println("Size of array after removing item:"+myArr.size());
 
	}
	/*public void modifyDetails() throws IOException{
 
		ArrayList a= myArr;
		System.out.println(myArr);
 
 
 
 
	}*/
 
 
	public static void main(String[] args, ArrayList id) throws IOException {
		StudentProtocol s1= new StudentProtocol("89023","Rita","cse 3000Y","32.5");
		s1.addDetails();
	}
 
}

TableModelListener ERROR in Java 2011

Sat, 23 Jul 2011 03:47:25 -0400

TableModelListener ERROR in Java 2011

Code:
import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    import javax.swing.table.*;
    import javax.swing.event.*;
    /**
     *
     * @author Pilu
     */
    public class Afisare extends javax.swing.JFrame implements ActionListener, TableModelListener {
     
    //private JButton getValue;
     
    private Vector> data;
    private Vector header;
    /** Creates new form Afisare */
    public Afisare() throws Exception {
    DBEngine dbengine = new DBEngine();
     
    DefaultTableModel tableModel;
    data = dbengine.getTabel();
    header = new Vector();
    header.add("ID");
    header.add("Nume");
    header.add("Prenume");
    header.add("Pret");
    tableModel = new DefaultTableModel(data, header);
    tableModel.addTableModelListener( this );
     
    initComponents();
     
     
    }
    private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {
    // TODO add your handling code here:
    DefaultTableModel model = (DefaultTableModel) this.jTable2.getModel();
    int[] rows = jTable2.getSelectedRows();
    String connectionURL = "jdbc:mysql://localhost:3306/bazadedate";
    Connection connection;
    try{
    Class.forName("com.mysql.jdbc.Driver");
    connection = DriverManager.getConnection(connectionURL, "root", "123456");
    String query = "SELECT * FROM tabel ORDER BY id DESC LIMIT 1" ;
    Statement st = connection.createStatement();
    ResultSet result = st.executeQuery(query);
    String textField1 = jTextField1.getText();
    String textField2 = jTextField2.getText();
    String textField3 = jTextField3.getText();
    while(result.next()){
    int lastRowValue = result.getInt("id");
    model.addRow(new Object[]{(lastRowValue+1),textField1,textField2,textField3});
    st.executeUpdate("INSERT INTO tabel (nume,prenume,pret) VALUES ('"+textField1+"','"+textField2+"','"+textField3+"')");
    }
    }
    catch(Exception e){
    System.out.println("The exception is " + e);
    }
    }
     
     
     
    public void tableChanged( TableModelEvent e ) {
     
    DefaultTableModel model = (DefaultTableModel)e.getSource();
    int row = e.getFirstRow();
    int column = e.getColumn();
    String cellValue = String.valueOf( model.getValueAt(row, column) );
    System.out.println("Value at (" + row + "," + column + ") changed to " + "'" + cellValue + "\'");
    }
     
     
    public void actionPerformed( ActionEvent evt ) {
     
    DefaultTableModel model = (DefaultTableModel)evt.getSource();
    int row = jTable2.getSelectedRow();
    int column = jTable2.getSelectedColumn();
     
    if ( evt.getSource() == jButton3 ) {
    String value = (String) model.getValueAt(row,column) ;
    System.out.println("Value at (" + row + "," + column + ") is " + "\'" + value + "\'");
    }
    }
    public static void main(String args[]) {
    java.awt.EventQueue.invokeLater(new Runnable() {
    public void run() {
    try
    {
    new Afisare().setVisible(true);
     
    }catch(Exception e){e.printStackTrace();}
    }
    });
     
    }

Exception Handling in Java 2011

Sat, 23 Jul 2011 03:46:23 -0400

Exception Handling in Java 2011

Code:
import java.util.Scanner;
 
public class Main {
 
/**
  * @param args the command line arguments
  */
public static void main(String[] args) {
// TODO code application logic here
Scanner input = new Scanner( System.in);
 
int Num1, Num2=1, sum, product, difference;
float division;
 
try
{
while(Num2 !=0)
{
System.out.print("Enter first Number: ");
Num1 = input.nextInt();
System.out.print(" Enter Second Number: ");
Num2 = input.nextInt();
 
sum = Num1 + Num2;
product = Num1 * Num2;
difference = Num1 - Num2;
 
division = (float)Num1/(float)Num2;
 
System.out.printf("Sum =%d\n", sum);
System.out.printf("Product =%d\n", product);
System.out.printf("The difference =%d\n", difference);
System.out.printf("Divion is %.3f\n ", division);
}
}
catch(Exception e)
{
System.err.println("Error " + e.getMessage());
}
}
}

Getting the element of a vector in Java 2011

Sat, 23 Jul 2011 03:45:28 -0400

Getting the element of a vector in Java 2011

Code:
private Vector snakeX = new Vector (5,2);
    private Vector snakeY = new Vector (5,2);
     
    public void startGraphics (){
    this.addKeyListener(this);
    repaint();
    snakeX.add(240);
    snakeY.add(240);
    snakeX.add(240);
    snakeY.add(230);
    snakeX.add(240);
    snakeY.add(220);
     
    }
     
    public void paintComponent (Graphics g){
    super.paintComponent (g);
     
    for (int x : snakeX){
    g.fillOval(x, snakeY.elementAt(snakeX.lastIndexOf (x)),10, 10);
    System.out.println ("x: " + x + "\t y: " + snakeY.elementAt(snakeX.lastIndexOf (x)));
    }

}

program does not enter for loop in Java 2011

Sat, 23 Jul 2011 03:44:40 -0400

program does not enter for loop in Java 2011

Code:
import javax.swing.*;
    import java.awt.event.*;
    import java.awt.*;
    import java.util.*;
     
    public class SnakeG extends JPanel implements KeyListener, Runnable{
     
    private Vector snake = new Vector (5,2);
     
    private Vector snakeRectangle = new Vector (5,2);
     
    public void startGraphics (){
     
    this.addKeyListener(this);
    Thread thread = new Thread (this);
     
    repaint();
    grabFocus();
    snake.add (new Point (250,250));
    snake.add(new Point (250,240));
    snake.add(new Point (250,230));
    addBall();
    thread.start();
    }
     
    private void addBall() {
    // TODO Auto-generated method stub
     
    }
     
     
     
    public void paintComponent (Graphics g){
    //TODO GRAPHICS AREA
    super.paintComponent (g);
     
    for (Point x : snake){
    g.fillOval((int)x.getX(),(int)x.getY(),10, 10);
     
    }
    }
     
     
     
     
    private boolean pressed = false;
    private boolean up,down,left,right;
    @Override
    public void keyPressed(KeyEvent e) {
    System.out.println ("KeyListener");
    int key = e.getKeyCode();
     
    up = false;
    down = false;
    left = false;
    right = false;
    if (key == KeyEvent.VK_UP && pressed == false){
    up = true;
    }
    else if (key == KeyEvent.VK_DOWN && pressed == false){
    down = true;
    }
    else if (key == KeyEvent.VK_LEFT && pressed == false){
    left = true;
    }
    else if (key == KeyEvent.VK_RIGHT && pressed == false){
    right = true;
    }
    pressed = true;
    }
     
    @Override
    public void keyReleased(KeyEvent e) {
    pressed = false;
    }
     
    @Override
    public void keyTyped(KeyEvent e){}
     
    @Override
    public void run() {
    // TODO Auto-generated method stub
    System.out.println ("Started Thread");
    while (true){
    if (up == true){
    for (int i = snake.size(); i < 0; i--){
    System.out.println ("Entered loop");
    if (i == 0){
    snake.firstElement().y -= 10;
    }
    else {
    snake.elementAt(i).y = snake.elementAt(i-1).y;
    }
    snake.elementAt(i);
    }
     
    }
    else if (down == true){
     
     
    }
    else if (left == true){
    for (int i = snake.size(); i < 0; i--){
    if (i == 0){
    snake.firstElement().x -= 10;
    }
    else {
    snake.elementAt(i).x = snake.elementAt(i-1).x;
    }
    }
     
    }
    else if (right == true){
     
     
    }
     
    repaint();
    try {
    Thread.sleep(500);
    } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
    }
    }
    }
     
    }

Editor does NOT contain a main type in Java 2011

Sat, 23 Jul 2011 03:43:47 -0400

Editor does NOT contain a main type in Java 2011I try to run a Java program from Eclipse, using run -> run as -> java application and get "Active Editor does not contain main type"

String to Char Array in Java 2011

Sat, 23 Jul 2011 03:43:00 -0400

String to Char Array in Java 2011

import java.util.*;
import java.io.*;

public class Test2
{
public static void main (String[] args) throws IOException
{
Scanner input = new Scanner(new FileReader("cipher2.in"));
String cipherText;
String cipherDirection;
String cipherType;
int cipherKey;

cipherKey = input.nextInt();
cipherDirection = input.next();
cipherType = input.next();
cipherText = input.next();

encrypt(cipherText, cipherKey);
}

public static void encrypt(String cipherText, int cipherKey)
{
int letterPosition;
int arrayPosition;
char[] cipherCode = new char[cipherText.length()];
letterPosition = cipherKey;

for (arrayPosition = 0; arrayPosition == cipherText.length(); arrayPosition++, letterPosition++)
{
if (cipherKey > 0 && letterPosition == cipherText.length())
{
for (letterPosition = 0; letterPosition == cipherKey; letterPosition++, arrayPosition++)
{
cipherCode[arrayPosition] = cipherText.charAt(letterPosition);
}
}

else
{
cipherCode[arrayPosition] = cipherText.charAt(letterPosition);
System.out.print(cipherCode[arrayPosition]);
}

}

System.out.print("Cipher Code: ");

for(int i = 0; i < cipherText.length(); i++)
{
System.out.print(cipherCode[i]);
}

System.out.println("\nCipher Text: " + cipherText);
System.out.println("Cipher Key: " + cipherKey);
}

}

Updating a JLabel in Java in c++ 2011

Fri, 22 Jul 2011 07:33:42 -0400

Updating a JLabel in Java in c++ 2011

Code:
import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
     
    public class TestSwingListeners1 {
    public static void main(String[] args) {
    JFrame fr1 = new JFrame("Swing Window");
    Container cp;
    JButton bt1;
    JButton bt2;
    int cnt1 = 0;
    int cnt2 = 0;
    String scr = null;
    String wnr = null;
    JButton btOK, btCancel;
    fr1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    fr1.setSize(300, 200);
    fr1.setResizable(false);
    cp = fr1.getContentPane();
    cp.setLayout(new GridLayout(5,1));
    btOK = new JButton("AC Milan");
    btCancel = new JButton("Real Madrid");
    JLabel lbl1 = new JLabel("Result: " + cnt1 + "X" + cnt2);
    JLabel lbl2 = new JLabel("Last Scorer: " + scr);
    JLabel lbl3 = new JLabel("Winner: " + wnr);
    cp.add(btOK);
    cp.add(btCancel);
    cp.add(lbl1);
    cp.add(lbl2);
    cp.add(lbl3);
     
     
    btOK.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent ae) {
     
    }
    });
     
    btCancel.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent ae) {
     
    }
    });
    fr1.show(); // Deprecated method!
     
     
     
    }
    }

Java Programming !Help! in c++ 2011

Wed, 20 Jul 2011 08:59:14 -0400

Java Programming !Help! in c++ 2011

doubt about "this" object in java 2011

Tue, 19 Jul 2011 04:51:09 -0400

doubt about "this" object in java