How to get height of string / character in java?

Question

I want to get the height of a string. Here is what i mean:
Say I have string : Hi , then I want the height(Hi) as the max height among all the characters in that string, so it will be the height of H. I saw few posts which said to use graphics to measure it, but i am not printing it, but i just want the height!
If I can get the height of character then i will write a loop to see which is the highest height!
So either of the two is fine:
Get height of string(max height among all letters in string) or
Get height of specified letter!

Wouldn't you also have to specify which font all of the characters are displayed in? (I actually wouldn't be terribly surprised if what you want is doable) — Dennis Meng, Oct 24 '13 at 06:22
http://stackoverflow.com/questions/368295/how-to-get-real-string-height-in-java — Linga, Oct 24 '13 at 06:23
@ling.s i saw that. do i need to extend JPanel? My code is not using JPanel! — Destructor, Oct 24 '13 at 06:29
@DennisMeng i am using default font! so I am wondering if eclipse could return height using default font? — Destructor, Oct 24 '13 at 06:30
So something like Courier? (Also, "default" won't really help if your code can be run on places with different defaults.) — Dennis Meng, Oct 24 '13 at 06:36
The height of it in what font? weight? point size? Your question doesn't make sense without specifying those, which takes you into `Graphics` land. — user207421, Oct 24 '13 at 06:58

score 4 · Accepted Answer · edited Jun 20 '20 at 09:12

Just use the method GC#textExtent() to get a Point with the height and width of the text:

public static void main(String[] args)
{
    final Display display = Display.getDefault();
    final Shell shell = new Shell(display);
    shell.setLayout(new GridLayout(1, false));

    GC gc = new GC(display);
    
    System.out.println(gc.textExtent("Hi").y);
    
    gc.dispose();
    
    shell.pack();
    shell.open();

    while (!shell.isDisposed())
    {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

Javadoc:

Returns the extent of the given string. Tab expansion and carriage return processing are performed.

The extent of a string is the width and height of the rectangular area it would cover if drawn in a particular font (in this case, the current font in the receiver).

How to get height of string / character in java?

1 Answers1