Initial data commit

Task/Abstract-type/Groovy/abstract-type-1.groovy

@@ -0,0 +1,5 @@
+public interface Interface {
+    int method1(double value)
+    int method2(String name)
+    int add(int a, int b)
+}

Task/Abstract-type/Groovy/abstract-type-2.groovy

@@ -0,0 +1,5 @@
+public abstract class Abstract1 {
+    abstract public int methodA(Date value)
+    abstract protected int methodB(String name)
+    int add(int a, int b) { a + b }
+}

Task/Abstract-type/Groovy/abstract-type-3.groovy

@@ -0,0 +1,3 @@
+public abstract class Abstract2 implements Interface {
+    int add(int a, int b) { a + b }
+}

Task/Abstract-type/Groovy/abstract-type-4.groovy

@@ -0,0 +1,15 @@
+public class Concrete1 implements Interface {
+    public int method1(double value) { value as int }
+    public int method2(String name) { (! name) ? 0 : name.toList().collect { it as char }.sum() }
+    public int add(int a, int b) { a + b }
+}
+
+public class Concrete2 extends Abstract1 {
+    public int methodA(Date value) { value.toCalendar()[Calendar.DAY_OF_YEAR] }
+    protected int methodB(String name) { (! name) ? 0 : name.toList().collect { it as char }.sum() }
+}
+
+public class Concrete3 extends Abstract2 {
+    public int method1(double value) { value as int }
+    public int method2(String name) { (! name) ? 0 : name.toList().collect { it as char }.sum() }
+}

Task/Abstract-type/Groovy/abstract-type-5.groovy

@@ -0,0 +1,12 @@
+def c1 = new Concrete1()
+assert c1 instanceof Interface
+println (new Concrete1().method2("Superman"))
+
+def c2 = new Concrete2()
+assert c2 instanceof Abstract1
+println (new Concrete2().methodB("Spiderman"))
+
+def c3 = new Concrete3()
+assert c3 instanceof Interface
+assert c3 instanceof Abstract2
+println (new Concrete3().method2("Hellboy"))