e593. getting the dimensions of text.txt

这里面包含了一百多个JAVA源文件

// From within the paint() method
    public void paint(Graphics g) {
        Graphics2D g2d = (Graphics2D)g;
        Font font = new Font("Serif", Font.PLAIN, 12);
        FontMetrics fontMetrics = g2d.getFontMetrics();
    
        int width = fontMetrics.stringWidth("aString");
        int height = fontMetrics.getHeight();
    }
    
    // From within a component
    class MyComponent extends JComponent {
        MyComponent() {
            Font font = new Font("Serif", Font.PLAIN, 12);
            FontMetrics fontMetrics = getFontMetrics(font);
    
            int width = fontMetrics.stringWidth("aString");
            int height = fontMetrics.getHeight();
        }
    }