---
title: Preserve the thrown stack trace
description: Datadog, the leading service for cloud-scale monitoring.
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  Docs > Datadog Security > Code Security > Static Code Analysis (SAST) > SAST
  Rules > Preserve the thrown stack trace
---

# Preserve the thrown stack trace

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## Metadata{% #metadata %}

**ID:** `java-best-practices/preserve-stack-trace`

**Language:** Java

**Severity:** Notice

**Category:** Best Practices

## Description{% #description %}

This rule identifies when exceptions are raised within a `catch` block but are not relevant to the exception parameter specified in the `catch` block. This can result in the original exception's stack trace information being lost, which leads to throwing less detailed exceptions.

## Non-Compliant Code Examples{% #non-compliant-code-examples %}

```java
public class Foo {
    void foo() {
        try {
            Integer.parseInt("foo");
        } catch (Exception e) {
            throw new Exception(e.getMessage()); // only throwing the message here
        }
    }
}
```

## Compliant Code Examples{% #compliant-code-examples %}

```java
public class Foo {
    void foo() {
        try {
            Integer.parseInt("foo");
        } catch (Exception e) {
            throw new Exception(e); // sending the full exception at least
        }
    }
}
```
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