How To Create File In Java
Affichage des articles dont le libellé est How To Create File In Java. Afficher tous les articles
Affichage des articles dont le libellé est How To Create File In Java. Afficher tous les articles

Java Create, Write, Delete Text File

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How To Create And Write And Delete Txt File Using Java NetBeans

java create writr remove text file
In this Java tutorial will demonstrate how to create a text file with a custom name and write data from a jTextArea into the file. Additionally, we will learn how to remove the file using the FileWriter and BufferedWriter classes in Java NetBeans, all in a step-by-step manner .


Project Source Code:


// create and write in text file
private void jButtonCreateAndWriteActionPerformed(java.awt.event.ActionEvent evt) {                                                      
      
        String filePath = jTextFieldFilePath.getText();
        
        File file = new File(filePath);
        
        if(!file.exists()){
            try {
                
                file.createNewFile();
                FileWriter wr = new FileWriter(file);
                BufferedWriter bw = new BufferedWriter(wr);
                
                bw.write(jTextArea1.getText());
                
                bw.close();
                wr.close();
                
            } catch (IOException ex) {
                Logger.getLogger(TxtFile_Create_Write_Delete.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
        
    }                                                     

   // delete file
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        
        String filePath = jTextFieldFilePath.getText();
        
        File file = new File(filePath);
        
        if(file.exists()){
            file.delete();
        }
        
    } 


OutPut:

create write delete text file using java

Java Create File / Folder

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How To Create File Or Directory In Java

java create file and folder
In this Java Tutorial we will see How To Create File Or Folder Using Java NetBeans .


Project Source Code:

package javaapplication1;

 import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;

 public class Java_Create_File_Or_Directory extends javax.swing.JFrame {

     /**
     * Creates new form Java_Create_File_Or_Directory
     */
    public Java_Create_File_Or_Directory() {
        initComponents();
    }

     @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

         jTextFieldPath = new javax.swing.JTextField();
        jButtonCreate_File = new javax.swing.JButton();
        jButtonCreate_Directory = new javax.swing.JButton();

         setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

         jTextFieldPath.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
        jTextFieldPath.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextFieldPathActionPerformed(evt);
            }
        });

         jButtonCreate_File.setText("Create File");
        jButtonCreate_File.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButtonCreate_FileActionPerformed(evt);
            }
        });

         jButtonCreate_Directory.setText("Create Directory");
        jButtonCreate_Directory.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButtonCreate_DirectoryActionPerformed(evt);
            }
        });

         javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(21, 21, 21)
                        .addComponent(jTextFieldPath, javax.swing.GroupLayout.PREFERRED_SIZE, 390, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(89, 89, 89)
                        .addComponent(jButtonCreate_File, javax.swing.GroupLayout.PREFERRED_SIZE, 108, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(jButtonCreate_Directory, javax.swing.GroupLayout.PREFERRED_SIZE, 127, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap(45, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(88, 88, 88)
                .addComponent(jTextFieldPath, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(39, 39, 39)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButtonCreate_File)
                    .addComponent(jButtonCreate_Directory))
                .addContainerGap(45, Short.MAX_VALUE))
        );

         pack();
    }// </editor-fold>                        

     private void jTextFieldPathActionPerformed(java.awt.event.ActionEvent evt) {                                               
        // TODO add your handling code here:
    }                                              

     private void jButtonCreate_FileActionPerformed(java.awt.event.ActionEvent evt) {                                                   

         File f = new File(jTextFieldPath.getText());
        if(!f.exists())
        {
            try {
                f.createNewFile();
                f.mkdir();
                JOptionPane.showMessageDialog(null, "File Created");
            } catch (IOException ex) {
                Logger.getLogger(Java_Create_File_Or_Directory.class.getName()).log(Level.SEVERE, null, ex);
            }
        }else{
            JOptionPane.showMessageDialog(null, "File Already Exists");
        }
        
    }                                                  

     private void jButtonCreate_DirectoryActionPerformed(java.awt.event.ActionEvent evt) {                                                        
       
        File directory = new File(jTextFieldPath.getText());
        
        if(!directory.exists())
        {
           directory.mkdir();
           JOptionPane.showMessageDialog(null, "directory Created");
        }
        
        else
        {
         JOptionPane.showMessageDialog(null, "directory Already Exists");
        }
        
    }                                                       

     /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Java_Create_File_Or_Directory.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Java_Create_File_Or_Directory.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Java_Create_File_Or_Directory.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Java_Create_File_Or_Directory.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

         /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Java_Create_File_Or_Directory().setVisible(true);
            }
        });
    }

     // Variables declaration - do not modify                     
    private javax.swing.JButton jButtonCreate_Directory;
    private javax.swing.JButton jButtonCreate_File;
    private javax.swing.JTextField jTextFieldPath;
    // End of variables declaration                   
}



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