关于java：无法从String转换为(应该是另一个String)

Cannot convert from String to (what should be another String)

我正在尝试使用枚举来存储一堆字符串，但是当我将它们转换为字符串时它不起作用。我得到错误"无法从String转换为ChessSquare.SelectedPiece。我认为它只会有一点变化，但我找不到要改变的地方。

这是我的代码：

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package Logic;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;

//chess square class, 1 instance of which for each square in the grid
@SuppressWarnings("serial")
public class ChessSquare extends JButton {

//instance variables for position and pieces
public int posX;
public int posY;
public String currentPiece;
public enum selectedPiece{
NONE, PAWN, ROOK, KNIGHT, BISHOP, QUEEN, KING
}
selectedPiece piece;

//load images and cast into icons
BufferedImage buttonIcon = ImageIO.read(new File(piece));
ImageIcon Icon = new ImageIcon(buttonIcon);
BufferedImage

//constructor for chess squares
public ChessSquare(int x, int y, double p) throws IOException {
this.setIcon(Icon);
setVisible(true);
}

//accessor method for position
public void squarePos(int x, int y){
this.posX = x;
this.posY = y;
}

//accessor method for currentPiece
public void cPiece(){
this.currentPiece = piece;
}

//specify what each value of enum slectedPiece represents
public void selectedPiece(){
switch (piece){
case NONE:
piece ="E:\\Eclipse\\ChessF\\src\\Images\\EmptySquare.jpg";
case PAWN:
piece ="E:\\Eclipse\\ChessF\\src\\Images\\Pawn.jpg";
case ROOK:
piece ="E:\\Eclipse\\ChessF\\src\\Images\
ook.jpg";
case KNIGHT:
piece ="E:\\Eclipse\\ChessF\\src\\Images\\Knight.jpg";
case BISHOP:
piece ="E:\\Eclipse\\ChessF\\src\\Images\\Bishop.jpg";
case QUEEN:
piece ="E:\\Eclipse\\ChessF\\src\\Images\\Queen.jpg";
case KING:
piece ="E:\\Eclipse\\ChessF\\src\\Images\\King.jpg";
}
}
}

相关讨论

在Java中，enum是一个完整的类...因此，你应该将你的枚举操作(转换为/来自字符串)放在其中。例如：

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public enum SelectedPiece{
NONE("E:\\Eclipse\\ChessF\\src\\Images\\EmptySquare.jpg"),
PAWN("E:\\Eclipse\\ChessF\\src\\Images\\Pawn.jpg"),
ROOK("E:\\Eclipse\\ChessF\\src\\Images\
ook.jpg"),
KNIGHT("E:\\Eclipse\\ChessF\\src\\Images\\Knight.jpg"),
BISHOP("E:\\Eclipse\\ChessF\\src\\Images\\Bishop.jpg"),
QUEEN("E:\\Eclipse\\ChessF\\src\\Images\\Queen.jpg"),
KING("E:\\Eclipse\\ChessF\\src\\Images\\King.jpg");

private String imageFilename;
private ImageIcon image;

private SelectedPiece( String imageFilename ) throws IOException {
this.imageFilename = imageFilename;
this.image = new ImageIcon(ImageIO.read(new File(piece)));
}

public String getImageFilename() {
return imageFilename;
}

public ImageIcon getImage() {
return image;
}
}

依此类推......然后在需要的地方使用枚举值。