Java StackTraceElement toString() Method

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Description

The Java StackTraceElement toString() method returns a string representation of this stack trace element.

Declaration

Following is the declaration for java.lang.StackTraceElement.toString() method

public String toString()

Parameters

NA

Return Value

This method returns a string representation of the object.

Exception

NA

Example: Getting StackTraceElement String representation using Current Thread

The following example shows the usage of Java StackTraceElement toString() method. In this program, we've defined a function named function2() which gets the string representation from StackTraceElement of current thread. Another function named function1() is used to instantiate the StackTraceElementDemo class and call the function2() method. In main method, we've called the function1() method and result is printed.

package com.tutorialspoint;

public class StackTraceElementDemo {

   public static void main(String[] args) {
      function1();
   }

   public static void function1() {
      new StackTraceElementDemo().function2();
   }
 
   public void function2() {
      int i;
    
      // print stack trace
      for(i = 1 ; i < 3 ; i++ ) {
         System.out.println(Thread.currentThread().getStackTrace()[i].
         toString());
      }
   }
}   

Output

Let us compile and run the above program, this will produce the following result −

com.tutorialspoint.StackTraceElementDemo.function2(StackTraceElementDemo.java:20)
com.tutorialspoint.StackTraceElementDemo.function1(StackTraceElementDemo.java:12)

Example: Getting String representation of ArithmeticException's StackTraceElement

The following example shows the usage of Java StackTraceElement toString() method. In main method, we've created three int variables where one variable is carrying zero value. In try-catch block, we've created a divide by zero scenario to raise an ArithmeticException. In catch block, we've handled the ArithmeticException, retrieved an array of StackTraceElement from it using getStackTrace() method and then using toString() method on first element of the array, the string representation is printed.

package com.tutorialspoint;

public class StackTraceElementDemo {

   public static void main(String[] args) {

      // variables to store int values
      int a = 0, b = 1, c;

      try {
         // being divide by zero, this line will throw an ArithmeticException
         c = b / a;
      }catch(ArithmeticException e) {
         // get the array of StackTraceElement
         StackTraceElement[] stackTraceElements =  e.getStackTrace();
         // print the string representation
         System.out.println(stackTraceElements[0].toString());
      }
   }
}  

Output

Let us compile and run the above program, this will produce the following result −

com.tutorialspoint.StackTraceElementDemo.main(StackTraceElementDemo.java:12)

Example: Getting String representation of Exception's StackTraceElement

The following example shows the usage of Java StackTraceElement toString() method. In main method, we've created three int variables where one variable is carrying zero value. In try-catch block, we've created a divide by zero scenario to raise an ArithmeticException. In catch block, we've handled the Exception, retrieved an array of StackTraceElement from it using getStackTrace() method and then using toString() method on first element of the array, the string representation is printed.

package com.tutorialspoint;

public class StackTraceElementDemo {

   public static void main(String[] args) {

      // variables to store int values
      int a = 0, b = 1, c;

      try {
         // being divide by zero, this line will throw an ArithmeticException
         c = b / a;
      }catch(Exception e) {
         // get the array of StackTraceElement
         StackTraceElement[] stackTraceElements =  e.getStackTrace();
         // print the string representation
         System.out.println(stackTraceElements[0].toString());
      }
   }
}  

Output

Let us compile and run the above program, this will produce the following result −

com.tutorialspoint.StackTraceElementDemo.main(StackTraceElementDemo.java:12)