ExceptionTools.java

package net.sourceforge.seqware.common.util.exceptiontools;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;

/**
 * <p>
 * ExceptionTools class.
 * </p>
 * 
 * @author boconnor
 * @version $Id: $Id
 */
public class ExceptionTools {
    /**
     * <p>
     * stackTraceToString.
     * </p>
     * 
     * @param aThrowable
     *            a {@link java.lang.Throwable} object.
     * @return a {@link java.lang.String} object.
     */
    public static String stackTraceToString(Throwable aThrowable) {
        final Writer result = new StringWriter();
        final PrintWriter printWriter = new PrintWriter(result);
        aThrowable.printStackTrace(printWriter);
        return result.toString();
    }

    /**
     * <p>
     * causedBy.
     * </p>
     * 
     * @param received
     *            a {@link java.lang.Throwable} object.
     * @param cause
     *            a {@link java.lang.Class} object.
     * @return a {@link java.lang.Throwable} object.
     */
    public static Throwable causedBy(Throwable received, Class cause) {
        Throwable error = received;
        while (error != null) {
            if (cause.isInstance(error)) {
                return error;
            }
            error = error.getCause();
        }
        return null;
    }
}