If String123 is the name of an existing variable, it should work. If that's the string to display, you have to surround it with double quotes:
text("String123", 0, 600);

Oh... I think I'm fundamentally wrong? :(

I wanted to create a string, then text that string to the screen...


I can't do that? because you can't use a string like an array?

With "text to the screen", do you mean to just display the string? That's exactly what text() does. I don't get why you would use an array for that.

Maybe you wanted to display it letter by letter, then an array could make sense.
– You can convert a string to a char[]-array, with the function toCharArray().
– Or you could just use chatAt(), to display a specific letter from the string.
– Or use substring(), wich might be the best solution, because you don't have to handle the distnace between the letters yourself.

1. String someText = "This is some text.";
   char[] letters = someText.toCharArray();
   
   void setup() {
     size(300, 100);
     frameRate(4);
   }
   
   void draw() {
     if (frameCount<= letters.length) {
       int index = frameCount-1;
       int x = frameCount*15;
       text(letters[index], x, 30);
       text(someText.charAt(index), x, 50);
       text(someText.substring(0, index+1), 15, 70);
     }
     else {
       noLoop();
     }
   }
   

I think I'm just being stupid here :)


I want to do this...


String[] asdfghjkl= new String[CurrentArray.length];

 for (int i = 0; i < CurrentArray.length; i++) {
    asdfghjkl[i] = CurrentArray[i];


text(asdfghjkl, 0,600);



<<The method text (char[], int, int, float, float) in the type PApplet is not applicable for the arguments (String[], int, int)

1. int TEXT_SIZE = 20;
2. int LINE_INTERVAL = TEXT_SIZE + 4; // Ajust at will
3. int MARGIN = 50;
4.  
5. size(500, 500);
6.  
7. textSize(TEXT_SIZE);
8. String[] lines = { "This is a", "message of", "general interest" };
9. for (int i = 0; i < lines.length; i++)
10. {
11.   text(lines[i], MARGIN, MARGIN + i * LINE_INTERVAL);
12. }
13.  
14. String txt = join(lines, "\n");
15. text(txt, MARGIN, 200); // Using built-interval

that got me somewhere :)

I should just start a new thread with this question...
I'm going about this all wrong I think...

I want to write an array to a string when a key is pressed, then display that string whether the key remains pressed or not.


if (key == 'y') {
       for (int i = 0; i < CurrentArray.length; i++) {     //Write array to string
               Line1[i] = CurrentArray[i] + "\t"; }}

   for (int i = 0; i < CurrentArray.length; i++) {         //display string
    text(Line1[i], 0,600); }


But even counting through the string to display it like you'd have to with an array, doesn't work...

I don't understand what you are trying to do.
Why do you copy CurrentArray into Line1? Why add a tab which isn't displayed anyway?
Note that you display all lines at the same place, it will create a mess if there is more than one line...

You should do like me, make a runnable little sketch isolating your current problem.

heh, different reasons :p

I am copying array into a string so I can save/load it...


Trying to create a string, when a key is pressed (Making it OUTSIDE the main draw loop)
& then display that string, preferably shifting the old string up a space

Like this?

1. String[] lines = {"Line Scrolling Example"};
2. 
   
3. void setup() {
4.   size(400, 600);
5.   textFont(createFont("Arial", 12));
6.   textAlign(LEFT, BOTTOM);
7.   fill(0);
8. }
9. 
   
10. void draw() {
11.   background(255);
12.  
13.   for(int i = 0; i < lines.length; i ++)
14.     text(lines[i], 10, height - 10 - i * 14);
15. }
16. 
    
17. void keyPressed() {
18.   lines = splice(lines, "The \"" + key + "\" was pressed", 0);
19. }
20. 
    
21. void mousePressed() {
22.   lines = splice(lines, "The mouse was pressed at location (" + mouseX + ", " + mouseY + ")", 0);
23. }

Yay! thanks guy :) 

That's what I ended up using!


Marvel at my hideous code!

1. /* Servo controller for Robotic Arm
   Teach pendant for Robotic arm... should allow axis control, and memorizing/saving arm status, and repeating arm movements from saved Files (g code?)
   also displays a crude Wireframe simulation of the Arm
   Code by: Johnny Graves */
   import processing.serial.* ;                    // Use the included processing code serial library
   int gripper=90, wrist=90,wristRotate=90,elbow=90,shoulder=90,shoulderRotate=90,     mousetracker=0, var1=0, var2=0, pos=0,mouseXinput=90,mouseYinput=90;                      // servo positions, start at 90//variable(s) for tracking/recording mouse position
   int[] CurrentArray = new int[6];String[] line1 = {};
   PFont z;Serial port;                     //Strings cannot be changed, so we use arrays for working on, & strings to print
   
   float x = 500;float y = 700;float angle1 = 0.0;float angle2 = 0.0;float angle3 = 0.0;float angle4 = 0.0;float segLength = 100; //Specs for simulation of Arm
   int GripperSimClaws = 100, GripperSimClaws2 = -55, stringCounter=0;
   
   void setup()
   {    size(720, 720);   strokeWeight(20.0);
   CurrentArray[0] = 100;CurrentArray[1] = 100;CurrentArray[2] = 100;CurrentArray[3] = 100;CurrentArray[4] = 100;CurrentArray[5] = 0;
        rectMode(CENTER);             //draw rectangles from center point, rather than upper left
     println(Serial.list());       // List COM-ports
   //  port = new Serial(this, Serial.list()[1], 19200); //select second com-port from the list (0,1,2,3-)
     z = createFont("Arial",20,true);
      text("Ok to open gripper & return to Home? <Press Enter>",50,90);    //THERE'S NO FUCKING WAY TO PAUSE CODE, I just wasted 2 hours looking
   }
        //Confirm movement, one motion at a time, then ask if arm is fully operational, or repeat the test? "Arm awaiting commands"
        //We DO still need to Ramp movement down (But not up?) so it doesn't JERK to a stop, it should slow down to a stop
       
        void draw() {  
     background(0,0,0);noStroke();
     fill(0,0,137,50);    rect(mouseX, mouseY, 100, 100, 30,30,30,30);      //make rect (X coordinate, Y, width, height)
     fill(26,196,255,50);rect(520, 520, 400, 400, 30, 30, 30, 100); //BG box
     fill(26,196,255,50);rect(420, 420, 200, 200, 30, 30, 30, 100); //Overhead BG box
     update(mouseX, mouseY);              //for some reason, this is the line to allow transmission to physical servos?
    
     stroke(26,234,255, 100);segLength = 100;angle1 = (mouseY/float(width)+1) * PI;angle2 = (mouseX/float(width)+1) * PI;angle3 = (CurrentArray[2]/float(width)*4 -0.9) * -PI;
     angle4 = (CurrentArray[3]/float(width)*4 -0.5) * -PI;
     //||||||||SIDE VIEW||||||||
     pushMatrix();segment(x, y, angle1); segment(segLength, 0,angle3); segLength=30 ;segment(100, 0,angle4);
     stroke(0,0,255, 200);strokeWeight(5.0);segLength = 30;segment(30, 0,GripperSimClaws);segLength = 30;segment(0, 0,GripperSimClaws2);strokeWeight(20.0);
     popMatrix();
    
     textFont(z, 30); fill(255);
       text(mouseX/4,70,120); text(mouseY/4,70,160);text(key,80,190);  textFont(z, 30); fill(0,150,255);  text("[MX]",0,120); text("[MY]",0,160);text("[Key]",0,190);
     text(CurrentArray[0],0,700);text(CurrentArray[1],60,700);text(CurrentArray[2],120,700);text(CurrentArray[3],180,700);text(CurrentArray[4],240,700);text(CurrentArray[5],300,700); 
       text("A/Q = Forearm",0,30);text("|S/W = Wrist",220,30);text("|D/E = WristRotate",420,30);text("R = Gripper",0,60);
         textFont(z, 10); fill(0,0,255); text("Rotate",10,670);text("Arm",70,670); text("Forearm",130,670);text("Wrist",190,670);text("WristRotate",240,670);text("Gripper",310,670);
     textFont(z, 20); fill(0,0,255); text("Overhead",350,350);text("Side",520,450);
    
   
    
   
    
     //|||||||OVERHEAD VIEW||||||
        pushMatrix();stroke(26,234,255, 100);segLength = 100;segment(400, 500, angle2); segment(10, 0,0);
     stroke(0,0,255, 200);strokeWeight(5.0);segLength = 30;segment(100, 0,GripperSimClaws);segLength = 30;segment(0, 0,GripperSimClaws2);strokeWeight(20.0);
        popMatrix();
       
           for(int i = 0; i < line1.length; i ++)  {
           if (i >25) break;     //# of lines to display
               text(line1[i], 10, height - 70 - i * 16);}
       
       // port.write (CurrentArray); //Finally send the current array to the arm
     if(mousePressed) {if (CurrentArray[5] ==0)  {CurrentArray[5] =1; GripperSimClaws = 0; GripperSimClaws2 = 0;} else {CurrentArray[5] =0; GripperSimClaws = 100; GripperSimClaws2 = -55;}delay(100);} 
   }    //Mouseclick, or space? saves the current location, & should show the file you're making/number of steps
   
   //MOUSETRACKING
   void update(int x, int y)  {
     mouseXinput= x/4;  CurrentArray[0] = mouseXinput;             //Calculate servo postion from mouseX/4 (0-180)
     mouseYinput= y/-4; CurrentArray[1] = -mouseYinput;   //mouse Y = Shoulder Rotate charachter
   }
   
   //SAVE COMMAND
   void keyPressed() {      //this doesn't need to be it's own void actually?
       switch(key) {
       case('q'):case('Q'):  if (CurrentArray[2] <180) {CurrentArray[2] ++; } break; 
       case('a'):case('A'):  if (CurrentArray[2] >0)   {CurrentArray[2] --; } break; 
       case('w'):case('W'):  if (CurrentArray[3] <180) {CurrentArray[3] ++; } break; 
       case('s'):case('S'):  if (CurrentArray[3] >0)   {CurrentArray[3] --; } break;
       case('d'):case('D'):  if (CurrentArray[4] >0)   {CurrentArray[4] --; } break;       
       case('e'):case('E'):  if (CurrentArray[4] <180) {CurrentArray[4] ++; } break; 
       case('r'):case('R'):  if (CurrentArray[5] ==0)  {CurrentArray[5] =1; GripperSimClaws = 0; GripperSimClaws2 = 0;} else {CurrentArray[5] =0; GripperSimClaws = 100; GripperSimClaws2 = -55;}break;  //if gripper is open, close it, else open it
       }    //End switch statement
    
     if (key == 'y') {       //Write current array, into a string (That string is placed in an array, & that Array later saved/loaded)
         String mystring = CurrentArray[0] + "," + CurrentArray[1] + "," + CurrentArray[2] + "," + CurrentArray[3] + "," + CurrentArray[4] + "," + CurrentArray[5] + "\t";
           line1 = splice(line1, mystring, 0);
   }
   
     if (key == 'p') {  saveStrings("Program thingy.txt", line1);} //I think it's overwriting the original with each new save? so also need to append it, & you should be able to choose name
     //Allegedly... it can save an Array, of STRINGS.... wtf?}       //Write current array, into a string
   
   
   //if (key == 'i') {} //Load file... preferably by selecting it/browse
   }
                                     
                                    
   //SEGMENT SIMULATOR FOR SIMULATOR
   void segment(float x, float y, float a) {
     translate(x, y);
     rotate(a);
     line(0, 0, segLength, 0);
   }