Eclipse Chessboard 绘图 - 如何更改窗口大小？

Question

我画了一个棋盘，但我的窗口太大了。我不知道如何更改窗口的大小。我用 JFrame 尝试过，但会弹出第二个窗口。有人可以帮我吗？我必须在方法“drawSquare”中添加一些东西吗？

棋盘图：

public class Pattern {

// change color names
public static final String BLACK = "schwarz";
public static final String WHITE = "weiss";

public enum TYPE {
    SQUARE, CIRCLE, TRIANLGE
};

private final static int SIZE = 30; // square size

public static void drawChessboard(int rows, int columns, TYPE type) {
    String color1 = BLACK;
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < columns; j++) {
            color1 = (color1 == BLACK) ? WHITE : BLACK; // Switches from one to another color
            switch (type) {
            case SQUARE:
                drawSquare(i * SIZE, j * SIZE, SIZE, color1);
                break;
            case CIRCLE:
                drawCircle(i * SIZE, j * SIZE, SIZE, color1);

            default:
                System.out.println("falscher typ"); // else
                break;
            }

        }
        color1 = (color1 == BLACK) ? WHITE : BLACK;
    }

}

public static void main(String[] args) {
    // JFrame frame = new JFrame("Chessboard");
    // frame.setSize(250, 250);

    drawChessboard(8, 8, TYPE.SQUARE);

    // frame.setVisible(true);
}

// DrawSquares
private static void drawSquare(int x, int y, int size, String color) {
    Quadrat lego;
    lego = new Quadrat();
    lego.groesseAendern(size);
    lego.horizontalBewegen(x);
    lego.farbeAendern(color);
    lego.vertikalBewegen(y);
    lego.sichtbarMachen();
}

// DrawCircles
private static void drawCircle(int x, int y, int size, String color) {
    Kreis lego;
    lego = new Kreis();
    lego.groesseAendern(size);
    lego.horizontalBewegen(x);
    lego.farbeAendern(color);
    lego.vertikalBewegen(y);
    lego.sichtbarMachen();
}