src/java.base/share/classes/java/util/IllegalFormatWidthException.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * accompanied this code).
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package java.util;

/**
 * Unchecked exception thrown when the format width is a negative value other
 * than {@code -1} or is otherwise unsupported. If a given format width is not
 * representable by an {@code int} type, then the value
 * {@code Integer.MIN_VALUE} will be used in the exception.
 *
 * @since 1.5
 */
public non-sealed class IllegalFormatWidthException extends IllegalFormatException {

    @java.io.Serial
    private static final long serialVersionUID = 16660902L;

    /** @serial */
    private int w;

    /**
     * Constructs an instance of this class with the specified width.
     *
     * @param  w
     *         The width
     */
    public IllegalFormatWidthException(int w) {
        this.w = w;
    }

    /**
     * Returns the width. If the width is not representable by an {@code int},
     * then returns {@code Integer.MIN_VALUE}.
     *
     * @return  The width
     */
    public int getWidth() {
        return w;
    }

    public String getMessage() {
        return Integer.toString(w);
    }
}