javafx error --- Can not retrieve property 'xxx' in PropertyValueFactory

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在javafx中使用表格时,将TableColumn与自己创建的类的某个字段绑定时出现的问题,自建类定义如下:

class RankRecord{
	private final SimpleIntegerProperty rankNumber = new SimpleIntegerProperty();
	private final SimpleStringProperty playerName = new SimpleStringProperty();
	private final SimpleIntegerProperty score = new SimpleIntegerProperty();
	
	
	public RankRecord(int ranknum, String playername, int score) {
		this.setRankNumber(ranknum);
		this.setPlayerName(playername);
		this.setScore(score);
	}
	
	public void setRankNumber(int ranknum) {
		this.rankNumber.set(ranknum);
	}
	
	public void setPlayerName(String name) {
		this.playerName.set(name);
	}
	
	public void setScore(int score) {
		this.score.set(score);
	}

	public int getRankNumber() {
		return this.rankNumber.get();
	}
	
	public String getPlayeName() {
		return this.playerName.get();
	}
	
	public int getScore() {
		return this.score.get();
	}
	
	public SimpleIntegerProperty rankNumberProperty() {
		return this.rankNumber;
	}
	
	public SimpleStringProperty playerNameProperty() {
		return this.playerName;
	}
	
	public SimpleIntegerProperty scoreProperty() {
		return this.score;
	}
	
}

报错的信息如下:

Can not retrieve property 'playerName' in PropertyValueFactory: javafx.scene.control.cell.PropertyValueFactory@2e6ad73b with provided class type: class crossword.RankRecord
java.lang.RuntimeException: java.lang.IllegalAccessException: class com.sun.javafx.reflect.Trampoline cannot access a member of class crossword.RankRecord with modifiers "public"

但是很明显我的类里是由那些字段的,可是为什么不能绑定呢?
还有就是说我的类的成员的限定符是public呢,明明是private啊!
后来发现是自建的类的限定符的问题,把自己的类定义为public 类就可以了,

public class RankRecord{...}

虽然问题解决了,但是新的问题又来了:
如果不指定修饰符的话,则默认为只能被同包内的类访问,经过排查代码,发现对TableColumn进行数据绑定的代码在另一个类中,而且这个类也没加修饰,可是这些代码都在同一个包中啊,应该可以访问到啊!!!根据 java.lang.RuntimeException: java.lang.IllegalAccessException这个错误提示,难道是必须要定义成public 类才能进行绑定?

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转载自blog.csdn.net/Miha_Singh/article/details/83687123
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