父抽象类中的变量是否被子类继承？

Question

Okay so will each instance of a subclass ie a J_Tetrimino class which extends Tetrimino get its own int[][] UP and String orientation?

public abstract class Tetrimino {

// [row][col]

/*The size of the area a tetrimino needs*/
protected final int TETRIMINO_SPACE_SIZE = 3;

/*The upwards and initial orientation of the J tetrimino*/
protected int[][] UP;

/*The left and second orientation of the J tetrimino*/
protected int[][] LEFT;

/*The down and third orientation of the J tetrimino*/
protected int[][] DOWN;

/*The right and fourth orientation of the J tetrimino*/
protected int[][] RIGHT;

protected String orientation = "UP";

public String getCurrentOrientation() {
    return orientation;
}

Answer 1

Yes. Every instance of a concrete implementation of your posted abstract class will get its' own instance of those fields. None of them are static which would make them shared. Also, all of them are protected so they will be visible in the sub-class (unless they're shadowed).