package com.vd.dsl; import static com.vd.dsl.GraphBuilder.*; public class Main {  public static void main(String[] args) {   Graph().edge().from("a").to("b").weigth(20.0).edge().from("b").to("c").weigth(10.0).printGraph();  } }

package com.vd.dsl; public class Edge {  private Vertex fromVertex;  private Vertex toVertex;  public Vertex getFromVertex() {   return fromVertex;  }  public void setFromVertex(Vertex fromVertex) {   this.fromVertex = fromVertex;  }  public Vertex getToVertex() {   return toVertex;  }  public void setToVertex(Vertex toVertex) {   this.toVertex = toVertex;  }  public Double getWeight() {   return weight;  }  public void setWeight(Double weight) {   this.weight = weight;  }  private Double weight;  public Edge() {  }  @Override  public String toString() {   return fromVertex.getLabel()+ " to "+    toVertex.getLabel() + "with weigth "+    this.weight;  } }