public void actionPerformed(ActionEvent e)
{
Object source = e.getSource(); JButton runButton = (JButton) e.getSource();
JTextField textField = (JTextField) e.getSource(); if (source == runButton)
{
String strInput = textField.getText();
fontSize = Integer.valueOf(rollNum.getText()).intValue();
font.deriveFont(fontSize); public void paintComponent(Graphics g)
{
super.paintComponent(g);
for (int i = 0; i < fontSize; i++)
{
}
...........
方法里面还定义方法?
{
Object source = e.getSource(); JButton runButton = (JButton) e.getSource();
JTextField textField = (JTextField) e.getSource(); if (source == runButton)
{
String strInput = textField.getText();
fontSize = Integer.valueOf(rollNum.getText()).intValue();
font.deriveFont(fontSize); public void paintComponent(Graphics g)
{
super.paintComponent(g);
for (int i = 0; i < fontSize; i++)
{
}
...........
方法里面还定义方法?
JTextField textField = (JTextField) e.getSource();Java中强制转型应该非常小心。