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Java – StackTrace to String conversion

Last Updated: September 11, 2022 by Chaitanya Singh | Filed Under: java

There are times when we want to convert the occurred exception to String. In the following program we are converting the stacktrace to String by using Throwable.printStackTrace(PrintWriter pw).

Example: Converting Exception StackTrace to String

package com.beginnersbook.string;
import java.io.PrintWriter;
import java.io.StringWriter;

public class StacktraceToString {
    public static void main(String args[]){
        try{
            int i =5/0;
            System.out.println(i);
        }catch(ArithmeticException e){
            /* This block of code would convert the
             * stacktrace to string by using
             * Throwable.printStackTrace(PrintWriter pw)
             * which sends the stacktrace to the writer
             * that we can convert to string using tostring()
             */
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            e.printStackTrace(pw);
            String stacktraceString = sw.toString();
            System.out.println("String is: "+stacktraceString);
        }
    }
}

Output:

String is: java.lang.ArithmeticException: / by zero
at com.beginnersbook.string.StacktraceToString.main(StacktraceToString.java:8)
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Tags: Java-Conversion

About the Author

I have 15 years of experience in the IT industry, working with renowned multinational corporations. Additionally, I have dedicated over a decade to teaching, allowing me to refine my skills in delivering information in a simple and easily understandable manner.

– Chaitanya

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