labels,textfields,buttons

Ads

 
 
 

Share on Google+Share on Google+

L.Bala Subrahmanyam
labels,textfields,buttons
1 Answer(s)      5 years and 11 months ago
Posted in : Java Beginners

how to set the labels,textfields,buttons at certain positions such that we can add them without layout managers? my program is to design a login page with image and these labels at exact positions.... thanks

Ads
View Answers

June 27, 2011 at 4:57 PM


1)LoginDemo.java:

import javax.swing.*;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;

class LoginDemo extends JFrame{
 JButton SUBMIT;
 JLabel label1,label2;
 final JTextField  text1,text2;
  LoginDemo(){
    setTitle("Login Form");
    setLayout(null);
    label1 = new JLabel();
    label1.setText("Username:");
    text1 = new JTextField(15);

    label2 = new JLabel();
    label2.setText("Password:");
    text2 = new JPasswordField(15);

    SUBMIT=new JButton("SUBMIT");
    label1.setBounds(350,100,100,20);
    text1.setBounds(450,100,200,20);
    label2.setBounds(350,130,100,20);
    text2.setBounds(450,130,200,20);
    SUBMIT.setBounds(450,160,100,20);
    add(label1);
    add(text1);
    add(label2);
    add(text2);
    add(SUBMIT);

   setVisible(true);
   setSize(1024,768);

 SUBMIT.addActionListener(new ActionListener(){
   public void actionPerformed(ActionEvent ae){
    String value1=text1.getText();
    String value2=text2.getText();
    try{
    Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/roseindia", "root", "root");
           Statement st=con.createStatement();
           ResultSet rs=st.executeQuery("select * from login where username='"+value1+"' and password='"+value2+"'");
           int count=0;
           int id=0;
           while(rs.next()){
               id=rs.getInt("id");
               count++;
           }
 if(count>0){
     WelcomePage page=new WelcomePage(id);
     page.setVisible(true);
       }
 else {

     JOptionPane.showMessageDialog(null,"Error!");
     text1.setText("");
     text2.setText("");
     }
    }
    catch(Exception e){}
}
 });
  }
  public static void main(String arg[]){
  new LoginDemo();
}
}

2)WelcomePage.java:

import javax.swing.*;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;

class WelcomePage extends JFrame{
WelcomePage(int id){
try{
Class.forName("com.mysql.jdbc.Driver").newInstance();
                        Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/roseindia", "root", "root");
                        Statement stmt = con.createStatement();
                        ResultSet rs = stmt
                                        .executeQuery("select image from login where id="+id+"");
                        byte[] bytes = null;
                        if (rs.next()) {
                                bytes = rs.getBytes(1);
                        }
                        rs.close();
                        stmt.close();
                        con.close();
                        if (bytes != null) {
                                JFrame f = new JFrame();
                                Image image = f.getToolkit().createImage(bytes);
                                ImageIcon icon=new ImageIcon(image);
                                JLabel label=new JLabel(icon);
                                f.setLayout(null);
                                label.setBounds(10,10,100,100);
                                f.getContentPane().add(label);
                                f.setSize(500,300);
                                f.setVisible(true);
                        }
}
catch(Exception e){
    System.out.println(e);
}

}
}

Ads









Related Tutorials/Questions & Answers:
labels,textfields,buttons
labels,textfields,buttons  how to set the labels,textfields,buttons at certain positions such that we can add them without layout managers? my program is to design a login page with image and these labels at exact positions
Tutorials   
Java Spring Hibernate Struts Training java.lang.NoClassDefFoundError: org/apache/http/client/HttpClient How do I resolve this Java Class not found exception? httpclient java.lang.NoClassDefFoundError Apache Commons ioutils maven dependency Read/Convert an inputStream to a String What is the meaning of Java Platform? Why Java is a platform independent language? What is the benefits of learning Core Java? Which technology should I learn after Java? What is array in java with example? How to Convert ArrayList to Array? How to substring in Java? How to format number in Java? What is instance variable in Java? How to download MySQL JDBC driver? What is Calendar class in Java? Which is the best Java tutorials for beginners? How to rename a file in Java? How to delete file in Java code? How to get day from date in Java using Calendar? How to get day of week in Java? How to calculate Date Difference in Java? How to compare date in Java? How to declare array in Java? How to calculate average of array in Java? What is Array in Java? write a java program to find the summation of all the integers entered on command line Sum of two numbers using command line arguments in Java How to create and use Array in Java? How to pass command line arguments in Java? How to create Applet Hello World? Appending String efficiently in Java How to append String in Java? How to list even numbers between 1 and 100? How to add BigDecimal in Java? What is Abstraction In Java? Which is best Beginners Java Tutorial? What is java.util package? Create list from array in Java Filter collection in Java 8 What is the best way to filter a Java Collection? Easy way to transform Collection to Array? How to convert Collection to Array in Java? What are Basic Java Language Elements? Advanced Java Tutorials in 2017 Java brief history Best Reasons to learn Java Java Example Codes and Tutorials in 2017 How do I read a large file quickly in Java? Is learning Java worthwhile?

Ads

 
Advertisement null

Ads