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@@ -0,0 +1,38 @@
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+package com.sf.day06;
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+
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+import java.util.Arrays;
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+
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+public class Car {
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+ double weight;
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+
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+ int horsepower;
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+ public double proportion(){
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+ return horsepower*10*1.0/weight;
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+ }
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+
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+ @Override
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+ public String toString() {
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+ return "Car{" +
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+ "weight=" + weight +
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+ ", horsepower=" + horsepower +
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+ "proportion = "+proportion()+
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+ '}';
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+ }
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+
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+ public static void main(String[] args) {
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+ Car[] cars = new Car[3];
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+ Car car1 = new Car();
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+ car1.weight = 1500;
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+ car1.horsepower = 180;
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+ Car car2 = new Car();
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+ car2.weight = 1300;
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+ car2.horsepower = 125;
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+ Car car3 = new Car();
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+ car3.weight = 2000;
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+ car3.horsepower = 130;
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+ cars[0] = car1;
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+ cars[1] = car2;
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+ cars[2] = car3;
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+ System.out.println(Arrays.toString(cars));
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+ }
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+}
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