List some fonts in Processing and save the result as a png.

fontListing.pde

PFont defaultFont;

int paddingLeft = 25;
int paddingTop = 20;
int row = 0;
int fontSize = 24;
int lineHeight = fontSize * 4;
int examplesPerColumn = 9;
int exampleCount = 0;
int columnWidth = 900;

void setup() {
  background (255);
  defaultFont = createDefaultFont(fontSize);
  size (1440, 800);
  fill(0);
  showTheFont("Arial");
  showTheFont("Georgia");
  showTheFont("Impact");
  showTheFont("Lucida");
  showTheFont("Papyrus");
  showTheFont("Tahoma");
  showTheFont("Verdana");
  showTheFont("Courier");
  save("fonts.png");
}

void showTheFont(String fontName) {
  int y;
  int x;
  PFont font;
  
  x = paddingLeft + (int)(exampleCount / examplesPerColumn) * columnWidth;
  
  y = paddingTop + fontSize + (row * lineHeight);
  textFont(defaultFont);
  text(fontName+":", x, y);
  
  y = paddingTop + fontSize + (row * lineHeight) + (int)(fontSize * 2);
  font = createFont(fontName, fontSize * 2);
  textFont(font);
  text("a b c d e f g h 0 1 2 3 4 @ $ % : ? ! , + - = *", x+fontSize, y);
  
  row = row + 1;
  if (row == examplesPerColumn) row = 0;
  
  exampleCount = exampleCount + 1;
}