java - Monospace and UTF8 -

i correcting font display in 1 of our old java swing application. changed after using "-dfile.encoding=utf-8" option @ run time.

fontclass.jar sample jar file.

option 1: javaw -xmx256m -jar -dfile.encoding=utf-8 "fontclass.jar"  option 2: javaw -xmx256m -jar "fontclass.jar" 

with option 1: monospaced display

with option 2: non monospaced display.

limitation:

i) -dfile.encoding=utf-8 option have added have our streams support utf-8 support. insteading of modifing each streams manually.

ii) using java swing frame work , in many placeses. uisng default font. changing lot of work.

so question there command line option using can monospace display option 1:

below sample code:

class show extends frame {     fontmetrics fontm;     string outstring;      show(string target, string title, font font) {          settitle(title);         outstring = target;          fontm = getfontmetrics(font);         setfont(font);          int size = 0;         (int = 0; < outstring.length(); i++) {             size += fontm.charwidth(outstring.charat(i));         }         size += 24;          setsize(size, fontm.getheight() + 60);         setlocation(getsize().width / 2, getsize().height / 2);         setvisible(true);     }      public void paint(graphics g) {         insets insets = getinsets();         int x = insets.left;         int y = insets.top;         g.drawstring(outstring, x + 6, y + fontm.getascent() + 14);     } }  public class fontclass {      public static void main(string[] args) {             string jastring = new string("\u65e5\u672c\u8a9e\u6587\u5b57\u5217");            string inputstring = "\niiii\naaaaiiii";          string displaystring = jastring + " " + inputstring;          font font;         font = new font("courier",3, 24);          new show(displaystring, "demo",font);      } } 

from fontmetrics api, defines advance in terms of charwidth(), "note advance of string not sum of advances of characters." moreover, font named "courier" may monospaced, may not same font specified font.monospaced.

instead, use textlayout derive required geometry, shown here, here , here.