java/examples/Basics/Data/TrueFalse/applet/TrueFalse.java

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+import processing.core.*; 
+
+import java.applet.*; 
+import java.awt.*; 
+import java.awt.image.*; 
+import java.awt.event.*; 
+import java.io.*; 
+import java.net.*; 
+import java.text.*; 
+import java.util.*; 
+import java.util.zip.*; 
+import java.util.regex.*; 
+
+public class TrueFalse extends PApplet {
+  public void setup() {/**
+ * True/False. 
+ * 
+ * Boolean data is one bit of information. True or false. 
+ * It is common to use Booleans with control statements to 
+ * determine the flow of a program. In this example, when the
+ * boolean value "x" is true, vertical black lines are drawn and when
+ * the boolean value "x" is false, horizontal gray lines are drawn. 
+ */
+ 
+boolean x = false;
+
+size(200, 200);
+background(0);
+stroke(0);
+
+for (int i = 1; i < width; i += 2) 
+{
+  if (i < width/2) {
+    x = true;
+  } else {
+    x = false;
+  }
+  
+  if (x) {
+    stroke(255);
+    line(i, 1, i, height-1);
+  }
+  
+  if (!x) {
+    stroke(126);
+    line(width/2 , i, width-2, i);
+  }
+}
+
+  noLoop();
+} 
+  static public void main(String args[]) {
+    PApplet.main(new String[] { "TrueFalse" });
+  }
+}