java - 枚举正在尝试通过不存在的公共(public)初始化程序来初始化自身

Question

我有一个枚举、布局。我使用私有(private)初始值设定项定义了一些成员(不记得正确的术语)。由于某种原因，它声称“布局是抽象的；无法实例化'(Intellij Idea)。我声明的私有(private)初始化程序显示一条警告，表示它从未使用过。代码:

public static enum Layout {
    CHARGE("Charge", false, false),

    FESS("Fess", true, true),

    PALE("Pale", true, true),

    QUARTERLY("Quarterly", true, false),

    PARTY_PER_PALE("Party per pale", true, false),

    BORDURE("Bordure", true, false),

    PARTY_PER_BEND_SINISTER("Party per bend sinister", true, false),

    SCARPE("Scarpe", true, false),

    THREE("Three", false, false),

    COUNTERCHARGED("Countercharged", false, false);

    public final String name;
    public final boolean hasSecondary;
    public final boolean chargeInSecondary;

    public abstract String blazon(CoatOfArms paramCoatOfArms);

    public abstract void draw(CoatOfArms paramCoatOfArms, MyDraw paramMyDraw, double paramDouble1, double paramDouble2, double paramDouble3);

    public abstract void drawLayout(MyDraw paramMyDraw, double paramDouble1, double paramDouble2);

    private Layout(String name, boolean hasSecondary, boolean chargeInSecondary) {
        this.name = name;
        this.hasSecondary = hasSecondary;
        this.chargeInSecondary = chargeInSecondary;
    }
}

Answer 1

由于您在 enum 中声明了 abstract 方法，因此它被认为是 abstract (就像抽象类)，这就是为什么您不能实例化它。您也不能将其声明为静态!

固定枚举:

public enum Layout {
    CHARGE("Charge", false, false),

    FESS("Fess", true, true),

    PALE("Pale", true, true),

    QUARTERLY("Quarterly", true, false),

    PARTY_PER_PALE("Party per pale", true, false),

    BORDURE("Bordure", true, false),

    PARTY_PER_BEND_SINISTER("Party per bend sinister", true, false),

    SCARPE("Scarpe", true, false),

    THREE("Three", false, false),

    COUNTERCHARGED("Countercharged", false, false);

    public final String name;
    public final boolean hasSecondary;
    public final boolean chargeInSecondary;

    private Layout(String name, boolean hasSecondary, boolean chargeInSecondary) {
        this.name = name;
        this.hasSecondary = hasSecondary;
        this.chargeInSecondary = chargeInSecondary;
    }
}