Alterar tamanho da imagem

Galera como faço para alterar o tamanho da imagem  dentro no Jframe sem precisar de botão, por que quando clico nas bordas para diminuir diminuo apenas o jText e a imagem e cortada.

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private void formWindowOpened(java.awt.event.WindowEvent evt) {

imAnimada.setIcon(new javax.swing.ImageIcon(getClass().getResource("/res/login/espiral.gif")));

}  

public class TelaLogin extends javax.swing.JFrame {
    public TelaLogin() {
        initComponents();
    }

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

        imAnimada = new javax.swing.JLabel();
        jButton1 = new javax.swing.JButton();
        TXT_Jogador = new javax.swing.JTextField();
        jLabel1 = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Quis_2020");
        setMaximumSize(new java.awt.Dimension(0, 0));
        setPreferredSize(new java.awt.Dimension(805, 628));
        setResizable(false);
        setSize(new java.awt.Dimension(0, 0));
        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowOpened(java.awt.event.WindowEvent evt) {
                formWindowOpened(evt);
            }
        });
        getContentPane().setLayout(null);

        imAnimada.setIcon(new javax.swing.ImageIcon(getClass().getResource("/res/login/espiral.gif"))); // NOI18N
        getContentPane().add(imAnimada);
        imAnimada.setBounds(50, 260, 400, 180);

        jButton1.setFont(new java.awt.Font("Segoe UI Semibold", 1, 18)); // NOI18N
        jButton1.setText("CONFIRMAR");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });
        getContentPane().add(jButton1);
        jButton1.setBounds(70, 160, 180, 50);

        TXT_Jogador.setFont(new java.awt.Font("Tahoma", 1, 36)); // NOI18N
        TXT_Jogador.setHorizontalAlignment(javax.swing.JTextField.CENTER);
        getContentPane().add(TXT_Jogador);
        TXT_Jogador.setBounds(30, 60, 280, 80);

        jLabel1.setFont(new java.awt.Font("Swis721 Hv BT", 1, 18)); // NOI18N
        jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/res/login/Login.jpg"))); // NOI18N
        jLabel1.setToolTipText("");
        jLabel1.setMaximumSize(new java.awt.Dimension(800, 600));
        jLabel1.setMinimumSize(new java.awt.Dimension(800, 600));
        jLabel1.setPreferredSize(new java.awt.Dimension(805, 628));
        getContentPane().add(jLabel1);
        jLabel1.setBounds(0, 0, 805, 600);

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

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
      Codigo c1 = new Codigo();
      c1.setJogador(TXT_Jogador.getText());
        System.out.println("Jogador: "+c1.getJogador());
        
        new Tela_Game().setVisible(true);
        this.setVisible(false);
        
    }                                        
    
    private void formWindowOpened(java.awt.event.WindowEvent evt) {                                  
   imAnimada.setIcon(new javax.swing.ImageIcon(getClass().getResource("/res/login/espiral.gif"))); 
   
   
    }                                 

    /*
     * @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(TelaLogin.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(TelaLogin.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(TelaLogin.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(TelaLogin.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 TelaLogin().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JTextField TXT_Jogador;
    private javax.swing.JLabel imAnimada;
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    // End of variables declaration                   
}