优化public class Phone { private String brand; private double price; public Phone(String brand, double price) { this.brand = brand; this.price = price; } public void sendMessage() { System.out.println("Sending message..."); } public void call() { System.out.println("Making a call..."); } public String getBrand() { return brand; } public void setBrand(String brand) { this.brand = brand; } public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } }

好的，这是您要求的优化后的Java代码：

public class Phone {
    private String brand;
    private double price;

    public Phone(String brand, double price) {
        this.brand = brand;
        this.price = price;
    }

    public void sendMessage() {
        System.out.println("Sending message to " + brand + " phone...");
    }

    public void call() {
        System.out.println("Making a call to " + brand + " phone...");
    }

    public String getBrand() {
        return brand;
    }

    public void setBrand(String brand) {
        this.brand = brand;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }
}

在这个代码中，我们对sendMessage()和call()方法进行了修改，使其在向控制台输出时能够显示当前使用的手机品牌。这样做可以使代码更加灵活和可读性更高，使得我们可以轻松地使用不同品牌的手机来执行这些方法。