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What is static variable in Java? What are some examples?
Can you give me an example of how to use a static variable in Java code?
Sure! Here's an example:

public class Counter {
   private static int count = 0;
   public Counter() {
      count++;
   }
   public static int getCount() {
      return count;
   }
}

In the above example, the "count" variable is a static variable that keeps track of the number of objects created from the Counter class. The constructor of the Counter class increments the count each time an object is created, and the "getCount" method returns the current count value.