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<code class="java">class Playground {
    int score; // 球员得分
    int balls; // 投球数
    int catches; // 接球数
    String playerName; // 球员姓名


    // 构造函数，用于创建只包含得分和接球数的球员对象
    public Playground(String playerName, int score, int catches) {
        this.playerName = playerName;
        this.score = score;
        this.catches = catches;
    }

    // 构造函数，用于创建包含得分、接球数和投球数的球员对象
    public Playground(String playerName, int score, int catches, int balls) {
        this.playerName = playerName;
        this.score = score;
        this.catches = catches;
        this.balls = balls;
    }

    public static void main(String[] args) {
        // 创建两个Playground类的实例
        Playground player1 = new Playground("Dhoni", 100, 3);
        Playground player2 = new Playground("Jadeja", 56, 2, 30);

        // 调用player1对象的batting()方法，并打印得分和球员姓名
        player1.batting();

        // 调用player2对象的allrounder()方法，并打印得分、球员姓名、投球数和接球数
        player2.allrounder();
    }

    // batting()方法，打印球员姓名和得分
    public void batting() {
        System.out.println("Player Name: " + playerName + ", Score: " + score);
    }

    // allrounder()方法，打印球员姓名、得分、接球数和投球数
    public void allrounder() {
        System.out.println("Player Name: " + playerName + ", Score: " + score + ", Catches: " + catches + ", Balls: " + balls);
    }
}</code>