使用来自另一个类的数组访问方法

// ArrayUtils类
public class ArrayUtils {
    public int getLength(int[] array) {
        return array.length;
    }

    public int getElement(int[] array, int index) {
        return array[index];
    }
}

// MyArray类继承ArrayUtils类
public class MyArray extends ArrayUtils {
    private int[] array;

    public MyArray(int[] array) {
        this.array = array;
    }

    public void printArrayInfo() {
        System.out.println("Array length: " + getLength(array));
        System.out.println("Element at index 0: " + getElement(array, 0));
    }
}

// ArrayUtils类
public class ArrayUtils {
    public int getLength(int[] array) {
        return array.length;
    }

    public int getElement(int[] array, int index) {
        return array[index];
    }
}

// MyArray类使用ArrayUtils类
public class MyArray {
    private int[] array;
    private ArrayUtils arrayUtils;

    public MyArray(int[] array) {
        this.array = array;
        this.arrayUtils = new ArrayUtils();
    }

    public void printArrayInfo() {
        System.out.println("Array length: " + arrayUtils.getLength(array));
        System.out.println("Element at index 0: " + arrayUtils.getElement(array, 0));
    }
}

// 适配器模式示例
public class ArrayUtilsAdapter {
    private ArrayUtils arrayUtils;

    public ArrayUtilsAdapter(ArrayUtils arrayUtils) {
        this.arrayUtils = arrayUtils;
    }

    public int getArrayLength(int[] array) {
        return arrayUtils.getLength(array);
    }

    public int getArrayElement(int[] array, int index) {
        return arrayUtils.getElement(array, index);
    }
}

// 公共接口示例
public interface ArrayOperations {
    int getLength(int[] array);
    int getElement(int[] array, int index);
}

// ArrayUtils类实现接口
public class ArrayUtils implements ArrayOperations {
    @Override
    public int getLength(int[] array) {
        return array.length;
    }

    @Override
    public int getElement(int[] array, int index) {
        return array[index];
    }
}

// MyArray类使用接口
public class MyArray {
    private int[] array;
    private ArrayOperations arrayOperations;

    public MyArray(int[] array, ArrayOperations arrayOperations) {
        this.array = array;
        this.arrayOperations = arrayOperations;
    }

    public void printArrayInfo() {
        System.out.println("Array length: " + arrayOperations.getLength(array));
        System.out.println("Element at index 0: " + arrayOperations.getElement(array, 0));
    }
}