Initial data commit

Task/Stack-traces/Java/stack-traces-1.java

@@ -0,0 +1,11 @@
+public class StackTracer {
+    public static void printStackTrace() {
+	StackTraceElement[] elems = Thread.currentThread().getStackTrace();
+
+	System.out.println("Stack trace:");
+	for (int i = elems.length-1, j = 2 ; i >= 3 ; i--, j+=2) {
+	    System.out.printf("%" + j + "s%s.%s%n", "",
+		    elems[i].getClassName(), elems[i].getMethodName());
+	}
+    }
+}