Como Refrescar jTable1 netbeans 6.8

[zetaaster]

Aqui pongo lo que falta del codigo y me marca con una raya amarilla dos variables que es la de tabla y modelo dice algo asi "local variable hides a field" espero me puedas decir cual es mi error y gracias por tu ayuda.



txtnombre.setText(resourceMap.getString("txtnombre .text")); // NOI18N
txtnombre.setName("txtnombre"); // NOI18N

jLabel2.setText(resourceMap.getString("jLabel2.tex t")); // NOI18N
jLabel2.setName("jLabel2"); // NOI18N

txtlicenciatura.setText(resourceMap.getString("txt licenciatura.text")); // NOI18N
txtlicenciatura.setName("txtlicenciatura"); // NOI18N

jLabel3.setText(resourceMap.getString("jLabel3.tex t")); // NOI18N
jLabel3.setName("jLabel3"); // NOI18N

txtcuatrimestre.setText(resourceMap.getString("txt cuatrimestre.text")); // NOI18N
txtcuatrimestre.setName("txtcuatrimestre"); // NOI18N

jLabel4.setText(resourceMap.getString("jLabel4.tex t")); // NOI18N
jLabel4.setName("jLabel4"); // NOI18N

btnnuevo.setText(resourceMap.getString("btnnuevo.t ext")); // NOI18N
btnnuevo.setName("btnnuevo"); // NOI18N
btnnuevo.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnnuevoActionPerformed(evt);
}
});

btncancelar.setText(resourceMap.getString("btncanc elar.text")); // NOI18N
btncancelar.setName("btncancelar"); // NOI18N
btncancelar.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btncancelarActionPerformed(evt);
}
});

btneliminar.setText(resourceMap.getString("btnelim inar.text")); // NOI18N
btneliminar.setName("btneliminar"); // NOI18N
btneliminar.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btneliminarActionPerformed(evt);
}
});

btnmodificar.setText(resourceMap.getString("btnmod ificar.text")); // NOI18N
btnmodificar.setName("btnmodificar"); // NOI18N
btnmodificar.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnmodificarActionPerformed(evt);
}
});

btnaceptar.setText(resourceMap.getString("btnacept ar.text")); // NOI18N
btnaceptar.setName("btnaceptar"); // NOI18N
btnaceptar.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnaceptarActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.Grou pLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(51, 51, 51)
.addGroup(jPanel1Layout.createParallelGroup(javax. swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(137, 137, 137)
.addComponent(btnaceptar)
.addGap(50, 50, 50)
.addComponent(btncancelar)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.RELATED, 84, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax. swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.UNRELATED)
.addComponent(txtidalumno, javax.swing.GroupLayout.PREFERRED_SIZE, 269, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILI NG, jPanel1Layout.createSequentialGroup()
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.UNRELATED)
.addComponent(txtlicenciatura, javax.swing.GroupLayout.PREFERRED_SIZE, 269, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.UNRELATED)
.addComponent(txtnombre, javax.swing.GroupLayout.PREFERRED_SIZE, 269, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(1, 1, 1)
.addComponent(jLabel4)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax. swing.GroupLayout.Alignment.LEADING, false)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILI NG, jPanel1Layout.createSequentialGroup()
.addComponent(btnnuevo)
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(btnmodificar)
.addGap(72, 72, 72))
.addComponent(txtcuatrimestre, javax.swing.GroupLayout.PREFERRED_SIZE, 269, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addPreferredGap(javax.swing.LayoutStyle.Component Placement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(btneliminar)))
.addGap(100, 100, 100))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(35, 35, 35)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(81, Short.MAX_VALUE))
);