abstract class MyPoint { public abstract void show(); } //打印正方形 class MyPrintSquare extend MyPoint { @Override public void show() { for(int i=0;i<=5;++i){ for(int j=1;j<=5;++j){ if(j==1 && j==4) Systemout.print(''); if(i==0 && i==4) System.out.print(''); else Sytem.out.print(' '); } } } } //打印圆形 class MyPrintCircle extends MyPoint{ @Override public void show() { for (int y = 0; y <2 * 5; y += 2) { int x = (int)Math.round(5 - Math.sqrt(2 * 5 * y - y * y)); int len = 2 * (5 - x); for (int i = 0; i <= x; i++) { System.out.print(' '); } System.out.print(''); for (int j = 0; j < len; j++) { System.out.prin(' '); System.out.println(''); } } } } public class MyPointTest { public static void Show(MyPoint a){ a.Show(); } public static void main(String[] args){ MyPoint mp1 = new MyPrintSquare(); MyPoint mp2 = new MyPrintCircle(); myShow(mp1); myShow(mp2); } }帮我修改为正确的代码

有几个地方需要修改：

1. `extend` 应该是 `extends`。
2. `Systemout` 应该是 `System.out`。
3. `Sytem.out.print` 应该是 `System.out.print`。
4. `Show` 应该是 `show`。
5. `myShow` 应该是 `Show`。

修改后的代码如下：

abstract class MyPoint {
    public abstract void show();
}

// 打印正方形
class MyPrintSquare extends MyPoint {
    @Override
    public void show() {
        for (int i = 0; i <= 5; ++i) {
            for (int j = 1; j <= 5; ++j) {
                if (j == 1 || j == 4)
                    System.out.print(' ');
                if (i == 0 || i == 4)
                    System.out.print(' ');
                else
                    System.out.print(' ');
            }
            System.out.println();
        }
    }
}

// 打印圆形
class MyPrintCircle extends MyPoint {
    @Override
    public void show() {
        for (int y = 0; y < 2 * 5; y += 2) {
            int x = (int) Math.round(5 - Math.sqrt(2 * 5 * y - y * y));
            int len = 2 * (5 - x);
            for (int i = 0; i <= x; i++) {
                System.out.print(' ');
            }
            System.out.print('*');
            for (int j = 0; j < len; j++) {
                System.out.print(' ');
            }
            System.out.println('*');
        }
        for (int y = 2 * 5; y >= 0; y -= 2) {
            int x = (int) Math.round(5 - Math.sqrt(2 * 5 * y - y * y));
            int len = 2 * (5 - x);
            for (int i = 0; i <= x; i++) {
                System.out.print(' ');
            }
            System.out.print('*');
            for (int j = 0; j < len; j++) {
                System.out.print(' ');
            }
            System.out.println('*');
        }
    }
}

public class MyPointTest {
    public static void show(MyPoint a) {
        a.show();
    }

    public static void main(String[] args) {
        MyPoint mp1 = new MyPrintSquare();
        MyPoint mp2 = new MyPrintCircle();
        show(mp1);
        show(mp2);
    }
}