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Tech-Bizz-Devs#12 CRUD Application JAVA
please make sure to add them in your IDE before further processing of code
Tech-Bizz-Devs#12 CRUD Application in JAVA
WalkthroughThis update introduces a comprehensive Employee Management System (EMS) built with Java Swing, featuring a range of graphical user interfaces (GUIs) for various tasks such as employee addition, deletion, auditing, salary management, and user authentication. The changes encompass new forms and classes, enhancing the application's functionality and interactivity. A robust database connection strategy is employed, ensuring efficient management of employee data along with integrated features for user actions and security measures. Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant LoginPage
participant Database
participant EmployeeManagement
User->>LoginPage: Enter Credentials
LoginPage->>Database: Verify Credentials
Database-->>LoginPage: Return Verification Status
LoginPage-->>User: Show Success/Failure Message
User->>EmployeeManagement: Access Employee Features
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Actionable comments posted: 32
Outside diff range, codebase verification and nitpick comments (12)
.github/workflows/maven.yml (1)
31-31: Consider adding test execution in the build step.The current workflow only packages the application. Consider running tests as part of the CI process to catch issues early.
- run: mvn -B package --file pom.xml + run: mvn -B clean verify --file pom.xmlPrinting.java (1)
39-39: Use appropriate message types inJOptionPane.The message type
0is used for the info dialog. Consider usingJOptionPane.INFORMATION_MESSAGEfor better readability and maintainability.- JOptionPane.showMessageDialog(null, "PDF Created", "Info", 0); + JOptionPane.showMessageDialog(null, "PDF Created", "Info", JOptionPane.INFORMATION_MESSAGE);readme.md (1)
31-31: Consider reducing excessive exclamation marks.The use of many exclamation marks might seem excessive and can be toned down for a more professional tone.
Tools
LanguageTool
[style] ~31-~31: Using many exclamation marks might seem excessive (in this case: 3 exclamation marks for a text that’s 1856 characters long)
Context: .../94b6e782-0c1b-4659-86a4-adc4cb7592a8)
Audit_details.java (1)
19-21: Consider Using a Connection Pool.The current approach initializes a database connection when the form is created. Consider using a connection pool to manage database connections more efficiently.
DelEmployee.java (1)
1-4: Remove or update template comments.The comments about the license and template are placeholders and should be replaced with meaningful documentation or removed.
-/* - * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license - * Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template - */AddEmployee.form (1)
1-693: Ensure Consistent Use of Component Naming Conventions.The form uses a mix of naming conventions for components (e.g.,
jtfname,jLabel3). Consider adopting a consistent naming scheme to improve readability and maintainability.AddEmployee.java (4)
27-47: Consider Using a More Descriptive Class Author Tag.The author tag currently uses "MyPC." Consider using a more descriptive name or removing it if it's not providing useful information.
63-73: Handle Exceptions More Specifically.The constructor catches
ClassNotFoundExceptionandSQLExceptionseparately but handles them similarly. Consider providing more specific handling or logging for each exception type.
811-838: Consider Adding More File Type Checks for Image Selection.The
jLabel20MouseClickedmethod checks for common image file extensions. Consider supporting more formats or using a library to validate image files.
714-797: Enhance Input Validation inAddEmployeeClassThe
jbtaddActionPerformedmethod in theAddEmployeeclass lacks comprehensive input validation. While it checks for empty fields, it does not include measures to prevent SQL injection or ensure data integrity. Consider implementing input sanitization and validation techniques to enhance security and data quality.
- Ensure all user inputs are validated for format and content before database insertion.
- Use parameterized queries to prevent SQL injection.
Analysis chain
Validate User Input Before Database Operations.
The
jbtaddActionPerformedmethod collects user input and inserts it into the database. Ensure input validation is performed to prevent SQL injection and data integrity issues.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify input validation for fields used in database operations. # Test: Search for input validation logic in the `AddEmployee` class. rg --type java 'if \(' -A 5Length of output: 20374
salarypage.form (1)
1-869: Ensure Consistent Use of Component Naming Conventions.The form uses a mix of naming conventions for components (e.g.,
jTextField1,jLabel9). Consider adopting a consistent naming scheme to improve readability and maintainability.salarypage.java (1)
58-692: Review the GUI layout and components for usability and consistency.The GUI setup is extensive. Ensure that all components are correctly initialized and laid out. Consider reviewing the usability and consistency of component naming and layout.
Consider using more descriptive names for components instead of
jLabel1,jTextField1, etc., to improve readability and maintainability.
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files ignored due to path filters (10)
EMS-removebg-preview-removebg-preview.pngis excluded by!**/*.pngEMS-removebg-preview.pngis excluded by!**/*.pngEMS.pngis excluded by!**/*.pngbcprov-jdk15on-1.49.jaris excluded by!**/*.jarclear.pngis excluded by!**/*.pnginfo (1).pngis excluded by!**/*.pngitextpdf-5.5.4.jaris excluded by!**/*.jarjcalendar-1.4.jaris excluded by!**/*.jarmysql-connector-j-8.1.0.jaris excluded by!**/*.jarrs2xml.jaris excluded by!**/*.jar
Files selected for processing (28)
- .github/workflows/maven.yml (1 hunks)
- AddEmployee.form (1 hunks)
- AddEmployee.java (1 hunks)
- Audit_details.form (1 hunks)
- Audit_details.java (1 hunks)
- Auditdata.java (1 hunks)
- DelEmployee.form (1 hunks)
- DelEmployee.java (1 hunks)
- DeleteDataBase.java (1 hunks)
- LandingPage.form (1 hunks)
- LandingPage.java (1 hunks)
- LoginPage.form (1 hunks)
- LoginPage.java (1 hunks)
- Printing.java (1 hunks)
- RegistrationPage.form (1 hunks)
- RegistrationPage.java (1 hunks)
- Shubh.java (1 hunks)
- db.java (1 hunks)
- employeehome.form (1 hunks)
- employeehome.java (1 hunks)
- form.form (1 hunks)
- form.java (1 hunks)
- per.java (1 hunks)
- readme.md (1 hunks)
- salarypage.form (1 hunks)
- salarypage.java (1 hunks)
- updateEmployee.form (1 hunks)
- updateEmployee.java (1 hunks)
Files skipped from review due to trivial changes (3)
- Shubh.java
- employeehome.java
- per.java
Additional context used
LanguageTool
readme.md
[style] ~31-~31: Using many exclamation marks might seem excessive (in this case: 3 exclamation marks for a text that’s 1856 characters long)
Context: .../94b6e782-0c1b-4659-86a4-adc4cb7592a8)
Additional comments not posted (25)
.github/workflows/maven.yml (2)
4-7: Consider using verified GitHub Actions.The workflow uses third-party actions that are not certified by GitHub. Ensure you review their terms of service, privacy policy, and support documentation.
27-29: Ensure correct caching strategy.The
cache: mavenoption is used for caching dependencies. Verify that this is effectively reducing build times and that cache keys are appropriately configured if needed.employeehome.form (1)
5-5: VerifydefaultCloseOperationsetting.The
defaultCloseOperationis set to3, which corresponds toEXIT_ON_CLOSE. Ensure this behavior is desired, as it will terminate the application when the window is closed.LandingPage.form (1)
1-149: LGTM!The XML structure for the form is standard and appears to be correctly set up for the application's GUI.
Audit_details.form (1)
1-172: Ensure Consistency in GUI Definitions.The XML structure appears consistent with typical NetBeans form definitions. Ensure that all component IDs and properties are correctly linked to the corresponding Java code.
LoginPage.form (1)
1-294: Verify Component Integration.The XML structure for the login page form is consistent. Ensure that all component IDs and properties are correctly linked to the corresponding Java code.
DelEmployee.form (3)
21-21: Consideration: Default Close OperationThe
defaultCloseOperationis set to3(EXIT_ON_CLOSE). Ensure this is the desired behavior, as it will terminate the application when this window is closed.
71-71: Usability Concern: Disabled ComponentsThe
jPanel1is set toenabled="false". This might prevent user interaction with components inside it. Ensure this is intentional.
225-225: Usability Concern: Disabled Text FieldThe text field
jtfnameis disabled (enabled="false"). Verify if this is intended, as it will prevent user input.LoginPage.java (1)
321-321: Audit Logging: Method CallThe method
Auditdata.auditdatais called without verifying its implementation. Ensure it handles exceptions and logs audit data securely.form.form (1)
1-384: Ensure consistency in layout properties.Review the layout properties to ensure they align with the intended design and functionality. Verify that component sizes and alignments are consistent with the application's UI/UX guidelines.
RegistrationPage.form (1)
1-370: Ensure proper UI component properties.Verify that all UI components have the correct properties set, such as fonts, colors, and event handlers, to ensure a consistent and functional user interface.
Verification successful
UI Component Properties Verified
The properties for UI components in the
RegistrationPage.formfile are correctly set, including fonts, colors, and event handlers. This ensures a consistent and functional user interface. No issues were found.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify UI component properties in RegistrationPage.form file. # Check for correct property settings for UI components. rg --type xml '<Component class="javax.swing.*" name=".*">' -A 10Length of output: 216
Script:
#!/bin/bash # Locate the RegistrationPage.form file in the repository. fd RegistrationPage.form # Once located, search for UI component properties directly within the file. # Assuming the file is found, replace <path_to_file> with the actual path. # rg '<Component class="javax.swing.*" name=".*">' -A 10 <path_to_file>Length of output: 48
Script:
#!/bin/bash # Search for UI component properties within the located RegistrationPage.form file. rg '<Component class="javax.swing.*" name=".*">' -A 10 RegistrationPage.formLength of output: 8703
RegistrationPage.java (3)
1-12: Imports look good.The imports are appropriate for a Java Swing application with database interaction.
17-23: Class declaration and member variables are appropriate.The class
RegistrationPageextendsJFrameand includes member variables for user data.
24-288: GUI initialization and layout setup are well-structured.The use of GroupLayout for arranging components is appropriate for a Swing application.
updateEmployee.form (1)
1-439: Form structure and properties are well-defined.The form components and layout are typical for a NetBeans-generated form.
updateEmployee.java (3)
1-14: Imports look good.The imports are appropriate for a Java Swing application with database interaction.
19-31: Class declaration and member variables are appropriate.The class
updateEmployeeextendsJFrameand includes member variables for employee data.
46-348: GUI initialization and layout setup are well-structured.The use of GroupLayout for arranging components is appropriate for a Swing application.
AddEmployee.form (1)
1-693: Review Button Group Initialization.The
buttonGroup1is initialized withjrbgenmaleandjrbgenfemale. Ensure that these radio buttons are correctly used in the Java code to manage gender selection.Verification successful
Verification of Button Group Initialization Successful
The
buttonGroup1is correctly initialized withjrbgenmaleandjrbgenfemale, and their usage in the Java code for managing gender selection is properly implemented. The radio buttons are added to the button group, and their selection status is used to determine the gender. No issues were found.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the usage of `buttonGroup1` in the Java code to ensure correct gender selection. # Test: Search for the usage of radio buttons within the `AddEmployee` class. ast-grep --lang java --pattern $'class AddEmployee { $$$ private javax.swing.JRadioButton jrbgenmale; private javax.swing.JRadioButton jrbgenfemale; $$$ }'Length of output: 164
Script:
#!/bin/bash # Search for the usage of `jrbgenmale` and `jrbgenfemale` in all Java files to verify their usage. rg --glob '*.java' 'jrbgenmale|jrbgenfemale' -A 5Length of output: 5182
AddEmployee.java (1)
29-47: Avoid Using Public Fields for Sensitive Data.The class contains several private fields for storing employee information. Ensure these fields are not exposed publicly or misused elsewhere in the code.
Verification successful
Private Fields Are Not Exposed Publicly
The private fields in the
AddEmployeeclass are not exposed through public getters or direct access in other parts of the codebase. This indicates proper encapsulation of sensitive data. No issues found regarding public exposure of these fields.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the usage of private fields in the `AddEmployee` class to ensure they are not exposed publicly. # Test: Search for any public accessors or direct usage of private fields. ast-grep --lang java --pattern $'class AddEmployee { $$$ private String id; private String name; private String surname; $$$ }'Length of output: 138
Script:
#!/bin/bash # Description: Check for public getter methods that might expose private fields in the `AddEmployee` class. # Search for public getter methods in the AddEmployee class. ast-grep --lang java --pattern $'class AddEmployee { $$$ public $_ get$_() { $$$ } $$$ }'Length of output: 102
Script:
#!/bin/bash # Description: Check for direct usage of private fields outside the `AddEmployee` class. # Find all Java files to search for direct usage of private fields. fd --extension java --exec rg --no-heading --line-number 'AddEmployee\s*\.\s*(id|name|surname|gender|email|contact|designation|department|status|datehired|dob|salary|jobtitle|address1|address2|houseno|postcode|imageIcon)'Length of output: 223
salarypage.form (1)
1-869: Review Menu Item Accelerators for Consistency.The menu items have accelerators defined (e.g.,
Shift+Ctrl+S,Ctrl+P). Ensure these shortcuts are consistent with the application's overall design and do not conflict with other shortcuts.salarypage.java (3)
47-50: EnsureinitComponentsis not modified manually.The
initComponentsmethod is generated by the Form Editor and should not be modified manually to prevent inconsistencies.
984-1014: Ensuremainmethod handles exceptions properly.The
mainmethod sets the look and feel and launches the application. Ensure that exceptions are logged properly to help with debugging.
42-42: Verify the database connection methoddb.java_db().Ensure that the
db.java_db()method is correctly implemented and handles exceptions. This is crucial for maintaining a stable database connection.Verification successful
The
db.java_db()method includes exception handling.The method handles
ClassNotFoundExceptionandSQLExceptionby displaying an error message usingJOptionPaneand returningnull. Ensure that any code using this method checks fornullto avoid potentialNullPointerExceptions.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the implementation of the db.java_db() method. # Test: Search for the db.java_db() method implementation. Expect: Proper exception handling. ast-grep --lang java --pattern $'class db { $$$ static Connection java_db() { $$$ } $$$ }'Length of output: 105
Script:
#!/bin/bash # Search for the java_db method across all Java files to locate its implementation. rg 'java_db' --glob '*.java' -A 5Length of output: 2400
Script:
#!/bin/bash # Search for catch blocks within the java_db method in db.java to verify exception handling. rg 'catch' db.java -A 2 -B 2Length of output: 192
| // TODO add your handling code here: | ||
| }//GEN-LAST:event_jMenuItem3ActionPerformed | ||
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| private void jMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem4ActionPerformed | ||
| // TODO add your handling code here: | ||
| }//GEN-LAST:event_jMenuItem4ActionPerformed | ||
|
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||
| private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem2ActionPerformed | ||
| // TODO add your handling code here: | ||
| }//GEN-LAST:event_jMenuItem2ActionPerformed |
There was a problem hiding this comment.
Implement event handling logic.
The TODO comments indicate that the event handling logic for these menu items is missing.
Do you want me to help implement the event handling logic or open a GitHub issue to track this task?
| jMenu4.add(jMenuItem5); | ||
|
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| jMenuItem7.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_R, java.awt.event.InputEvent.CTRL_DOWN_MASK)); | ||
| jMenuItem7.setText("Recipt"); |
There was a problem hiding this comment.
Correct the typographical error in menu item text.
The text "Recipt" should be corrected to "Receipt".
- jMenuItem7.setText("Recipt");
+ jMenuItem7.setText("Receipt");Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| jMenuItem7.setText("Recipt"); | |
| jMenuItem7.setText("Receipt"); |
| }catch (ClassNotFoundException | SQLException e){ | ||
| JOptionPane.showMessageDialog(null, e); |
There was a problem hiding this comment.
Consider improving error handling.
Using JOptionPane for error messages might not be suitable for non-GUI contexts. Consider logging the error or throwing an exception.
import java.util.logging.Logger;
// Add a logger instance
private static final Logger LOGGER = Logger.getLogger(Db.class.getName());
// Replace JOptionPane with logging
LOGGER.log(Level.SEVERE, "Database connection error", e);|
|
||
| import java.sql.*; | ||
| import javax.swing.*; | ||
| public class db { |
There was a problem hiding this comment.
Follow Java naming conventions for class names.
The class name db should be capitalized to Db to follow Java naming conventions.
-public class db {
+public class Db {Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| public class db { | |
| public class Db { |
| System.out.println(id); | ||
| int norows = ps.executeUpdate(); | ||
| System.out.println("No of rows affected="+norows); |
There was a problem hiding this comment.
Use a logging framework instead of System.out.println.
For better logging practices, consider using a logging framework like java.util.logging.
import java.util.logging.Logger;
// Add a logger instance
private static final Logger LOGGER = Logger.getLogger(DeleteDataBase.class.getName());
// Replace System.out.println with logging
LOGGER.info("ID: " + id);
LOGGER.info("No of rows affected=" + norows);| private void jbtregisterActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jbtregisterActionPerformed | ||
| name = jtfname.getText(); | ||
| email = jtbemail.getText(); | ||
| username = jtbusername.getText(); | ||
| password = jtbpassword.getText(); | ||
| usertype = jcbusertype.getSelectedItem().toString(); | ||
| // System.out.println(name +"\n"+email+"\n"+username+"\n"+password+"\n"+usertype); | ||
| try { | ||
| Class.forName("com.mysql.cj.jdbc.Driver"); | ||
| System.out.println("Driver loaded"); | ||
|
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| // Connect to a database | ||
| Connection connection = DriverManager.getConnection("jdbc:mysql://localhost/shubham", "root", ""); | ||
| System.out.println("Database connected"); | ||
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| PreparedStatement stmt = connection.prepareStatement("insert into info(ename,email,username,password,type) values(?,?,?,?,?)"); | ||
| stmt.setString(1, name); // 1 specifies the first parameter in the query | ||
| stmt.setString(2, email); | ||
| stmt.setString(3, username); | ||
| stmt.setString(4, password); | ||
| stmt.setString(5, usertype); | ||
| int norows = stmt.executeUpdate(); | ||
| System.out.println("No of rows affected=" + norows); | ||
| if(norows != 0){ | ||
| Auditdata.auditdata(username, jbtregister.getText()); | ||
| String s[] = null; | ||
| LoginPage.main(s); | ||
| dispose(); | ||
| } | ||
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| connection.close(); | ||
| } catch (ClassNotFoundException e) { | ||
| System.err.println("Error loading the database driver: " + e.getMessage()); | ||
| } catch (SQLException e) { | ||
| System.err.println("SQL Error: " + e.getMessage()); | ||
| e.printStackTrace(); | ||
| } |
There was a problem hiding this comment.
Improve database resource management and error handling.
The database connection and statement should be closed in a finally block to ensure resources are released. Consider using try-with-resources for better management.
try (Connection connection = DriverManager.getConnection("jdbc:mysql://localhost/shubham", "root", "");
PreparedStatement stmt = connection.prepareStatement("insert into info(ename,email,username,password,type) values(?,?,?,?,?)")) {
// Set parameters and execute update
} catch (ClassNotFoundException e) {
System.err.println("Error loading the database driver: " + e.getMessage());
} catch (SQLException e) {
System.err.println("SQL Error: " + e.getMessage());
e.printStackTrace();
}| public class salarypage extends javax.swing.JFrame { | ||
|
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| /** | ||
| * Creates new form salarypage | ||
| */ | ||
| String empid; | ||
| String name; | ||
| String surname; | ||
| String designation; | ||
| String department; | ||
| String salary; | ||
| double allowance1; | ||
| double allowance2; | ||
| double allowance3; | ||
| double allowance4; | ||
| double allowance5; | ||
| double allowance6; | ||
| double total; | ||
| Connection conn = db.java_db(); | ||
| YearMonth currentYearMonth = getCurrentYearMonth(); | ||
| int currentYear = currentYearMonth.getYear(); | ||
| int currentMonth = currentYearMonth.getMonthValue(); |
There was a problem hiding this comment.
Consider renaming the class to follow Java naming conventions.
The class name salarypage should be capitalized to SalaryPage to adhere to Java naming conventions.
- public class salarypage extends javax.swing.JFrame {
+ public class SalaryPage extends javax.swing.JFrame {Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| public class salarypage extends javax.swing.JFrame { | |
| /** | |
| * Creates new form salarypage | |
| */ | |
| String empid; | |
| String name; | |
| String surname; | |
| String designation; | |
| String department; | |
| String salary; | |
| double allowance1; | |
| double allowance2; | |
| double allowance3; | |
| double allowance4; | |
| double allowance5; | |
| double allowance6; | |
| double total; | |
| Connection conn = db.java_db(); | |
| YearMonth currentYearMonth = getCurrentYearMonth(); | |
| int currentYear = currentYearMonth.getYear(); | |
| int currentMonth = currentYearMonth.getMonthValue(); | |
| public class SalaryPage extends javax.swing.JFrame { | |
| /** | |
| * Creates new form salarypage | |
| */ | |
| String empid; | |
| String name; | |
| String surname; | |
| String designation; | |
| String department; | |
| String salary; | |
| double allowance1; | |
| double allowance2; | |
| double allowance3; | |
| double allowance4; | |
| double allowance5; | |
| double allowance6; | |
| double total; | |
| Connection conn = db.java_db(); | |
| YearMonth currentYearMonth = getCurrentYearMonth(); | |
| int currentYear = currentYearMonth.getYear(); | |
| int currentMonth = currentYearMonth.getMonthValue(); |
| private void jbtupdateActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jbtupdateActionPerformed | ||
| try { | ||
| id = jftid.getText(); | ||
| name = jtfname.getText(); | ||
| surname = jtfsurname.getText(); | ||
| email = jtfemail.getText(); | ||
| contact = jtfcontact.getText(); | ||
| salary = jtfsalary.getText(); | ||
| address1 = jtfadd1.getText(); | ||
| address2 = jtfadd2.getText(); | ||
| houseno = jtfhouseno.getText(); | ||
| postcode = jftpostcode.getText(); | ||
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| PreparedStatement stmt = conn.prepareStatement("UPDATE employee SET name = ?, surname = ?, email = ?, contact = ?, salary = ?, address1 = ?, address2 = ?, house_no = ?, post_code = ? WHERE id = ?"); | ||
| stmt.setString(1, name); | ||
| stmt.setString(2, surname); | ||
| stmt.setString(3, email); | ||
| stmt.setString(4, contact); | ||
| stmt.setString(5, salary); | ||
| stmt.setString(6, address1); | ||
| stmt.setString(7, address2); | ||
| stmt.setString(8, houseno); | ||
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| stmt.setString(9, postcode); | ||
| stmt.setString(10, id); | ||
| int norows = stmt.executeUpdate(); | ||
| if (norows != 0) { | ||
| String s[] = null; | ||
| form.main(s); | ||
| dispose(); | ||
| } | ||
| } catch (SQLException ex) { | ||
| Logger.getLogger(updateEmployee.class.getName()).log(Level.SEVERE, null, ex); | ||
| } |
There was a problem hiding this comment.
Improve database resource management and error handling.
The database connection and statement should be closed in a finally block to ensure resources are released. Consider using try-with-resources for better management.
try (PreparedStatement stmt = conn.prepareStatement("UPDATE employee SET name = ?, surname = ?, email = ?, contact = ?, salary = ?, address1 = ?, address2 = ?, house_no = ?, post_code = ? WHERE id = ?")) {
// Set parameters and execute update
} catch (SQLException ex) {
Logger.getLogger(updateEmployee.class.getName()).log(Level.SEVERE, null, ex);
}| private String getCurrentDateTime() { | ||
| Calendar cal = new GregorianCalendar(); | ||
| int month = cal.get(Calendar.MONTH); | ||
| int year = cal.get(Calendar.YEAR); | ||
| int day = cal.get(Calendar.DAY_OF_MONTH); | ||
| int second = cal.get(Calendar.SECOND); | ||
| int minute = cal.get(Calendar.MINUTE); | ||
| int hour = cal.get(Calendar.HOUR); | ||
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| String dateTime = (month + 1) + "/" + day + "/" + year + " , " + hour + ":" + minute + ":" + second; | ||
| return dateTime; | ||
| } |
There was a problem hiding this comment.
Optimize Date and Time Formatting.
The getCurrentDateTime method manually constructs a date-time string. Consider using SimpleDateFormat for more readable and maintainable code.
private String getCurrentDateTime() {
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy , HH:mm:ss");
return sdf.format(new GregorianCalendar().getTime());
}| int idCount() throws ClassNotFoundException, SQLException { | ||
| Class.forName("com.mysql.cj.jdbc.Driver"); | ||
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| try (Connection connection = DriverManager.getConnection("jdbc:mysql://localhost/shubham", "root", "")) { | ||
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| PreparedStatement countQuery = connection.prepareStatement("SELECT COUNT(*) FROM employee"); | ||
| ResultSet resultSet = countQuery.executeQuery(); | ||
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| int number = 0; | ||
| if (resultSet.next()) { | ||
| number = resultSet.getInt(1); | ||
| } | ||
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| return number; | ||
| } | ||
| } |
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Ensure Proper Resource Management with Database Connections.
The idCount method opens a database connection but does not explicitly close the PreparedStatement and ResultSet. Ensure these resources are closed to prevent potential resource leaks.
int idCount() throws ClassNotFoundException, SQLException {
Class.forName("com.mysql.cj.jdbc.Driver");
try (Connection connection = DriverManager.getConnection("jdbc:mysql://localhost/shubham", "root", "");
PreparedStatement countQuery = connection.prepareStatement("SELECT COUNT(*) FROM employee");
ResultSet resultSet = countQuery.executeQuery()) {
int number = 0;
if (resultSet.next()) {
number = resultSet.getInt(1);
}
return number;
}
}1 participant
#12 CRUD Application JAVA
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