Initial data commit

Task/Stack/Java/stack-1.java

@@ -0,0 +1,21 @@
+import java.util.Stack;
+
+public class StackTest {
+    public static void main( final String[] args ) {
+        final Stack<String> stack = new Stack<String>();
+
+        System.out.println( "New stack empty? " + stack.empty() );
+
+        stack.push( "There can be only one" );
+        System.out.println( "Pushed stack empty? " + stack.empty() );
+        System.out.println( "Popped single entry: " + stack.pop() );
+
+        stack.push( "First" );
+        stack.push( "Second" );
+        System.out.println( "Popped entry should be second: " + stack.pop() );
+
+        // Popping an empty stack will throw...
+        stack.pop();
+        stack.pop();
+    }
+}