Java Quiz pra UAS Lab A

Main.java


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package quiz_11110446;

/**
*
* @author ridwan020920
*/
public class Main {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
new frmmhs().setVisible(true);
}

}

koneksi.java


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package quiz_11110446;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
/**
 *
 * @author ridwan020920
 */
public class koneksi {
Connection con = null;
Statement st = null;
String url = "jdbc:mysql://localhost:3306/biodata";
String user = "root";
String pass = "";

public koneksi() {
try{
        Class.forName("com.mysql.jdbc.Driver").newInstance();
        con = DriverManager.getConnection(url,user,pass);
        st=con.createStatement();
}catch(Exception ex){
        ex.printStackTrace();
}
}

public List getPersons(){
    ResultSet rs = null;
    List
            persons = new ArrayList();
    try{
        rs = st.executeQuery("SELECT NIM, NAMA FROM biodata");
        while(rs.next()){
            mhs p =new mhs();
            p.setNim(rs.getInt(1));
            p.setNama(rs.getString(2));
            persons.add(p);
        }
    }catch(Exception ex){
        ex.printStackTrace();
    }
    return persons;
}

public int insert(mhs p){
    int result = 0;
    try{
        result = st.executeUpdate("INSERT INTO biodata(nim, nama)" + "VALUES("+p.getNim()+",'"+p.getNama()+"')");
    }catch(Exception ex){
        ex.printStackTrace();
    }
    return result;
}
}

mhs.java

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package quiz_11110446;

/**
 *
 * @author ridwan020920
 */
public class mhs {
private int nim;
private String nama;

public mhs () {
}

public int getNim() {
return nim;
}
public void setNim(int nim) {
this.nim = nim;
}
public String getNama() {
return nama;
}
public void setNama(String nama) {
this.nama = nama;
}

}

frmmhs.java

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/*
 * frmmhs.java
 *
 * Created on 08 Des 11, 20:40:34
 */

package quiz_11110446;
import java.util.ArrayList;
import java.util.List;
import javax.swing.*;
/**
 *
 * @author ridwan020920
 */
public class frmmhs extends javax.swing.JFrame {
    
    koneksi knks = new koneksi();
    List persons = new ArrayList();
    int currentRow = 0;
    private Object biodata;

    /** Creates new form frmmhs */
    public frmmhs() {
        initComponents();
        loadData();
        bindData();
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    //                          
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        txtnim = new javax.swing.JTextField();
        txtnama = new javax.swing.JTextField();
        btntambah = new javax.swing.JButton();
        btnsimpan = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jLabel1.setText("Form Mhs");

        jLabel2.setText("NIM");

        jLabel3.setText("Nama");

        txtnim.setColumns(10);

        txtnama.setColumns(10);

        btntambah.setText("Tambah");
        btntambah.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btntambahActionPerformed(evt);
            }
        });

        btnsimpan.setText("Simpan");
        btnsimpan.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnsimpanActionPerformed(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()
                .addContainerGap()
                .addComponent(jLabel1)
                .addContainerGap(198, Short.MAX_VALUE))
            .addGroup(layout.createSequentialGroup()
                .addGap(41, 41, 41)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel3)
                                .addGap(30, 30, 30)
                                .addComponent(txtnama, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jLabel2)
                                .addGap(38, 38, 38)
                                .addComponent(txtnim, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                        .addContainerGap())
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(btntambah)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 14, Short.MAX_VALUE)
                        .addComponent(btnsimpan)
                        .addGap(57, 57, 57))))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jLabel1)
                .addGap(31, 31, 31)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(txtnim, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(33, 33, 33)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(txtnama, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 32, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(btntambah)
                    .addComponent(btnsimpan))
                .addGap(27, 27, 27))
        );

        pack();
    }//                        

    private void btntambahActionPerformed(java.awt.event.ActionEvent evt) {                                          
        // TODO add your handling code here:
        txtnim.setText("");
        txtnama.setText("");
        txtnim.setEditable(true);
        txtnama.setEditable(true);
        txtnim.requestFocus();
    }                                         

    private void btnsimpanActionPerformed(java.awt.event.ActionEvent evt) {                                          
        // TODO add your handling code here:
        mhs p = new mhs();
        p.setNim(Integer.parseInt(txtnim.getText()));
        p.setNama(txtnama.getText());
        if(knks.insert(p)>0){
        loadData();
        currentRow = persons.size()-1;
        bindData();
        JOptionPane.showMessageDialog(this,"Data berhasil disimpan","Informasi", JOptionPane.INFORMATION_MESSAGE);
        txtnim.setEditable(false);
        txtnama.setEditable(false);
        }else{
        JOptionPane.showMessageDialog(this,"Data gagal disimpan","Informasi", JOptionPane.INFORMATION_MESSAGE);
        }
    }                                         

private void loadData(){
    persons = knks.getPersons();
    }

    private void bindData(){
    if(persons.size()>0){
    mhs p = persons.get(currentRow);
    txtnim.setText(p.getNim()+"");
    txtnama.setText(p.getNama());
    }else{
    currentRow = 0;
    txtnim.setText("");
    txtnama.setText("");
    }
    }

    /**
    * @param args the command line arguments
    */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new frmmhs().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton btnsimpan;
    private javax.swing.JButton btntambah;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JTextField txtnama;
    private javax.swing.JTextField txtnim;
    // End of variables declaration                   

}

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