Add creational patterns, Interpreter; remove scripts; update README

01-creational/builder/House.java

@@ -0,0 +1,43 @@
+package builder;
+
+public class House {
+    private final int rooms;
+    private final int floors;
+    private final boolean hasGarage;
+    private final boolean hasGarden;
+    private final boolean hasPool;
+    private final String roofType;
+
+    private House(Builder builder) {
+        this.rooms     = builder.rooms;
+        this.floors    = builder.floors;
+        this.hasGarage = builder.hasGarage;
+        this.hasGarden = builder.hasGarden;
+        this.hasPool   = builder.hasPool;
+        this.roofType  = builder.roofType;
+    }
+
+    @Override
+    public String toString() {
+        return "House{rooms=" + rooms + ", floors=" + floors
+                + ", garage=" + hasGarage + ", garden=" + hasGarden
+                + ", pool=" + hasPool + ", roof='" + roofType + "'}";
+    }
+
+    public static class Builder {
+        private int rooms = 1;
+        private int floors = 1;
+        private boolean hasGarage = false;
+        private boolean hasGarden = false;
+        private boolean hasPool   = false;
+        private String roofType   = "flat";
+
+        public Builder rooms(int rooms)           { this.rooms = rooms;         return this; }
+        public Builder floors(int floors)         { this.floors = floors;       return this; }
+        public Builder garage(boolean v)          { this.hasGarage = v;         return this; }
+        public Builder garden(boolean v)          { this.hasGarden = v;         return this; }
+        public Builder pool(boolean v)            { this.hasPool = v;           return this; }
+        public Builder roofType(String roofType)  { this.roofType = roofType;   return this; }
+        public House build()                      { return new House(this); }
+    }
+}