---
title: Do not add an empty string
description: Datadog, the leading service for cloud-scale monitoring.
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  Docs > Datadog Security > Code Security > Static Code Analysis (SAST) > SAST
  Rules > Do not add an empty string
---

# Do not add an empty string

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## Metadata{% #metadata %}

**ID:** `java-best-practices/add-empty-string`

**Language:** Java

**Severity:** Warning

**Category:** Best Practices

## Description{% #description %}

Do not add an empty string. Use the appropriate method to generate the data you need, and add the `toString` method of the type you want to export as a string.

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

```java
class Main {

    public static void main(String[] args) {
        String s = "" + 239;
        String t = "123" + 456;
    }
}
```

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

```java
class Main {

    public static void main(String[] args) {
        String s = Integer.toString(239);
    }
}
```
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