java - Cant use setRGB() to write to png - 


public static void main(string[] args) {     string finalhex = "";     string input = "hello there sir.";     int pixelx = -1;     int pixely = 0;     try{         bufferedimage bi = new bufferedimage(64, 64, bufferedimage.type_int_argb);         file out = new file("saved.png");         if(out.exists()==false){             imageio.write(bi, "png", out);             system.out.println("png created");         }else              system.out.println("error: png there");         (int = 0;i < input.length(); i++){             char result = input.charat(i);             int ascii = (int) result;             string num = integer.tohexstring(ascii).touppercase();             if(finalhex.length()==6){                 system.out.println(finalhex);                 pixelx += 1;                 finalhex=("#"+finalhex);                         color c = color.decode(finalhex);                 int rgb = c.getrgb();                 system.out.println(rgb);                 if(pixelx==63){                     pixelx=0;                     pixely+=1;                 }                 bi.setrgb(pixelx, pixely, rgb);                                  finalhex="";                                 }             finalhex+=num;                       }                }catch(ioexception e){         system.out.println("error: welp... screwed up.");     } }

i trying use convert text png image cant write png file. not experienced in area if me out appreciated. :)

you should add imageio.write(bi, "png", out); after end of for(int = 0;i < input.length(); i++){...} program write colored pixels want?? example: result picture


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