get Error Message from Throwable - Android java.lang

Android examples for java.lang:Throwable

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Description

get Error Message from Throwable

Demo Code


import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.StringTokenizer;

public class Main{
    public static String getErrorMessage(Throwable err) {
        if (err instanceof java.sql.SQLException) {
            return getStackTraceErrorMessage(err);
        }//  ww  w  .  j  av a2 s . com
        if (err instanceof java.lang.NullPointerException) {
            return getStackTraceErrorMessage(err);
        }
        if (err instanceof java.io.EOFException) {
            return getStackTraceErrorMessage(err);
        }
        boolean prependClassName = !(err instanceof java.sql.SQLException || err
                .getClass() == java.lang.Exception.class);
        return getErrorMessage(err, prependClassName);
    }
    public static String getErrorMessage(Throwable err,
            boolean prependClassName) {
        String errMsg = err.getMessage();
        if (errMsg != null) {
            return errMsg;
        } else {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            if (err instanceof java.lang.NullPointerException) {
                getErrorMessageByStackTrace(pw, err);
            } else {
                getSignErrorMessageByStackTrace(pw, err);
            }
            return sw.toString();
        }
    }
    public static String getStackTraceErrorMessage(Throwable err) {
        boolean prependClassName = !(err instanceof java.sql.SQLException || err
                .getClass() == java.lang.Exception.class);
        return getStackTraceErrorMessage(err, prependClassName);
    }
    public static String getStackTraceErrorMessage(Throwable err,
            boolean prependClassName) {
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        err.printStackTrace(pw);
        return sw.toString();
    }
    public static void getErrorMessageByStackTrace(PrintWriter pw,
            Throwable err) {
        err.printStackTrace(pw);
    }
    public static void getSignErrorMessageByStackTrace(PrintWriter pw,
            Throwable err) {
        Throwable ourCause = err.getCause();
        if (ourCause != null) {
            String errMsg = ourCause.getMessage();
            if (!textUnit.StringIsEmpty(errMsg)) {
                pw.print(errMsg);
                pw.print("\n");
                return;
            }
            getErrorMessageByStackTrace(pw, ourCause);
        } /*
           * else { StackTraceElement[] stackTrace = err.getStackTrace(); if
           * (stackTrace != null) getErrorStackTraceMessage(stackTrace,pw,12); }
           */
    }
}

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