BuilderPatternExample.java

public class Vehicle{
 
 public class Builder{
 
 private String type;
 private String color;
 private int noOfWheels;
 private int id;
 
 public Builder(int id){
 
 this.id = id;
 }
 
 public Builder setType(String type){
 
 this.type = type;
 return this;
 }
 
 public Builder setColor(String color){
 
 this.color = color;
 return this;
 }
 
 public Builder setNoOfWheels(int noOfWheels){
 this.noOfWheels = noOfWheels;
 return this;
 }
 
 public Vehicle build(){
 
 return new Vehicle(this);
 }
 }
 
 private Vehicle(Builder builder){
 
 this.id = builder.id;
 this.type = builder.type;
 this.color = builder.color;
 this.noOfWheels = noOfWheels;
 }
}