class AA {
public int i;
protected int j;
private int k;
public void haha(int k) {
this.k = k;
}
}
class BB extends AA {
}
class CC extends BB {
System.out.println("hha"); //error out后的点和括号
//System.out.printf("%d %d", i, j);
}javaclass
public int i;
protected int j;
private int k;
public void haha(int k) {
this.k = k;
}
}
class BB extends AA {
}
class CC extends BB {
System.out.println("hha"); //error out后的点和括号
//System.out.printf("%d %d", i, j);
}javaclass
public int i;
protected int j;
private int k;
public void haha(int k) {
this.k = k; }
}class BB extends AA {}class CC extends BB {
public void method() {
System.out.println("hha"); // error out后的点和括号
// System.out.printf("%d %d", i, j);
}
}CC继承BB BB集成AA,其中CC是一个类,类里面要写方法,方法中才能去执行你要做的事情。