Processing generating a random amount of text - random

Question

I am trying to generate some random text using processing, what I want is that everytime I press the mouse new text is generated and is displayed on the screen. As of now the text is simply generated than it gets removed due to the looping of draw() any way to fix this?
int click = 0;
void setup() {
String alfabet = "abcdefghijklmnopqrstuvw";
size(1000,1000);
textSize(64);
textAlign(CENTER);
}
void draw() {
background(0);
if(click==1) {
click = 0;
genereren();
}
}
void genereren() {
String alfabet = "abcdefghijklmnopqrstuvw";
int x = 10;
for(int i = 0; i < 15; i = i+1) {
float r = random(24);
if(r < 1) {
r = r+1;
}
int d = int(r);
String EersteLetter = alfabet.substring(d-1,d);
if ( i <= 4) {
text(EersteLetter, 60+(x*3*i), 80);
}
if ( i <= 8) {
text(EersteLetter, 60+(x*3*i), 120);
}
if ( i <= 12) {
text(EersteLetter, 60+(x*3*i), 160);
}
if ( i <= 16) {
text(EersteLetter, 60+(x*3*i), 200);
}
}
}
void mouseClicked() {
click = 1;
}

Answer 1

try this example, if you click the mouse it will display or not, if you hold the mouse button you will freeze the current text.
boolean click = false;
void setup() {
String alfabet = "abcdefghijklmnopqrstuvw";
size(1000, 1000);
textSize(64);
textAlign(CENTER);
background(0);
}
void draw() {
if (click) {
genereren();
}
}
void mousePressed() {
if (mouseButton == LEFT) {
genereren();
}
}
void genereren() {
background(0);
String alfabet = "abcdefghijklmnopqrstuvw";
int x = 10;
for (int i = 0; i < 15; i = i+1) {
float r = random(24);
if (r < 1) {
r = r+1;
}
int d = int(r);
String EersteLetter = alfabet.substring(d-1, d);
if ( i <= 4) {
text(EersteLetter, 60+(x*3*i), 80);
}
if ( i <= 8) {
text(EersteLetter, 60+(x*3*i), 120);
}
if ( i <= 12) {
text(EersteLetter, 60+(x*3*i), 160);
}
if ( i <= 16) {
text(EersteLetter, 60+(x*3*i), 200);
}
}
}
void mouseReleased() {
clear();
}
void mouseClicked() {
click=!click;
}

Answer 2

The easiest way to do this would be just by not using the "background(0);", this way the text would stay for ever. Then you could add a button that runs a method whit the "background(0);" to erase all text.