Source Code : Reference Class method in Mathtool

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Reference Class method in Mathtool

import java.io.StringWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Collection;

import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.Velocity;
import org.apache.velocity.tools.generic.MathTool;

public class ProductList {

    public static void main(String[] args) throws Exception {
        Velocity.init();
        Template t = Velocity.getTemplate("./src/calculation.vm");
        VelocityContext ctx = new VelocityContext();
       
        Collection products = new ArrayList();
        products.add(new Product("Product 1", 112.199));
        products.add(new Product("Product 2", 113.991));
        products.add(new Product("Product 3", 111.919));
        ctx.put("productList", products);

        ctx.put("math", new MathTool());
        Writer writer = new StringWriter();
        t.merge(ctx, writer);

        System.out.println(writer);
    }
}


public class Product {

    private String name;
    private double price;
    
    public Product(String aName, double aPrice) {
        name = aName;
        price = aPrice;
    }
    
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public double getPrice() {
        return price;
    }
    public void setPrice(double price) {
        this.price = price;
    }
}

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#set($totalPrice = 0)
#foreach($product in $productList)
  $product.Name    $$product.Price
  #set($totalPrice = $math.add($totalPrice, $product.Price))
#end

Total Price: $$totalPrice
           
       

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