JAVA适配器模式-案例

超、凢脫俗 2024-03-27 19:25 8阅读 0赞

## Java适配器模式 ##

//定义转换接口
    public interface PowerConverter {
          
        int convert(int power);  
    }
    //定义适配器实现类
    public class PowerAdapter implements PowerConverter {
          
        private int inputVoltage;  
        private int outputVoltage;  
          
        public PowerAdapter(int inputVoltage, int outputVoltage) {
          
            this.inputVoltage = inputVoltage;  
            this.outputVoltage = outputVoltage;  
        }  
          
        @Override  
        public int convert(int power) {
          
            return power / inputVoltage * outputVoltage;  
        }  
    }
    //定义需要适配器的设备类
    public class Device {
          
        private PowerConverter powerConverter;  
          
        public Device(PowerConverter powerConverter) {
          
            this.powerConverter = powerConverter;  
        }  
          
        public void setPowerConverter(PowerConverter powerConverter) {
          
            this.powerConverter = powerConverter;  
        }  
          
        public void turnOn() {
          
            int power = 1000; // example power requirement for the device  
            int convertedPower = powerConverter.convert(power);  
            // use the converted power to operate the device  
        }  
    }
    //创建一个Device实例，并将一个PowerAdapter实例传递给它的构造函数。这样，适配器就可以在Device实例需要电源转换时进行转换
    public class Main {
          
        public static void main(String[] args) {
          
            PowerAdapter adapter = new PowerAdapter(110, 220); // converts 110V to 220V  
            Device device = new Device(adapter); // uses the adapter as a PowerConverter  
            device.turnOn(); // uses the converted power to operate the device  
        }  
    }