jframe get string width code example
Example: how to get the width and height of a string in java
String text = "Hello World";
Font font = new Font("Arial", Font.PLAIN, 12);
FontRenderContext frc = new FontRenderContext(new AffineTransform(), true, true);
int textwidth = (int)(font.getStringBounds(text, frc).getWidth());
int textheight = (int)(font.getStringBounds(text, frc).getHeight());