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+====== else ======
+<code java>
+ if ( condition == true ){
+    command;
+ } else {
+      // if the "if" condition false
+      command;
+      }
+</code>
+check if a condition is true or false
+===== example of else=====
+<code java>
+package plausibilitycheck;
+import java.util.Scanner;
+public class Plausibilitycheck{
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        int celsius;
+        double fahrenheit;
+        Scanner scan = new Scanner(System.in);
+        System.out.print("Please type in Celsius : ");
+        celsius = scan.nextInt();
+        if (celsius > 0) {
+            fahrenheit = celsius * 1.8 + 32;
+            System.out.println(celsius + "° Celsius are " + fahrenheit + "° Fahrenheit");
+        } else {
+            System.out.println("invalid Celsius Value ");
+        }
+    }
+}
+</code>
+=== output else ===
+     Please type in Celsius: 0
+     invalid Celsius Value

on the occasion of the current invasion of Russia in Ukraine