# UnsupportedClassVersionError

Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)

# UnsupportedClassVersionError

```
open class UnsupportedClassVersionError : ClassFormatError
```

|---|---|---|---|---|----------------------------------------------------------------------------------------------------------------------------------|
| [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html)                                                               ||||||
| ↳ | [kotlin.Throwable](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-throwable/index.html)                                                |||||
|   | ↳ | [java.lang.Error](https://developer.android.com/reference/kotlin/java/lang/Error)                                                         ||||
|   |   | ↳ | [java.lang.LinkageError](https://developer.android.com/reference/kotlin/java/lang/LinkageError)                                        |||
|   |   |   | ↳ | [java.lang.ClassFormatError](https://developer.android.com/reference/kotlin/java/lang/ClassFormatError)                             ||
|   |   |   |   | ↳ | [java.lang.UnsupportedClassVersionError](https://developer.android.com/reference/kotlin/java/lang/UnsupportedClassVersionError#) |

Thrown when the Java Virtual Machine attempts to read a class file and determines that the major and minor version numbers in the file are not supported.

## Summary

|                                                                                                                                                              Public constructors                                                                                                                                                              ||
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|
| [UnsupportedClassVersionError](https://developer.android.com/reference/kotlin/java/lang/UnsupportedClassVersionError#UnsupportedClassVersionError())`()` Constructs a`UnsupportedClassVersionError`with no detail message.                                                                                                                 |
| [UnsupportedClassVersionError](https://developer.android.com/reference/kotlin/java/lang/UnsupportedClassVersionError#UnsupportedClassVersionError(kotlin.String))`(`s:` `[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)!`)` Constructs a`UnsupportedClassVersionError`with the specified detail message. |

## Public constructors

### UnsupportedClassVersionError

Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
UnsupportedClassVersionError()
```

Constructs a`UnsupportedClassVersionError`with no detail message.  

### UnsupportedClassVersionError

Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
UnsupportedClassVersionError(s: String!)
```

Constructs a`UnsupportedClassVersionError`with the specified detail message.

|                                                 Parameters                                                 ||
|-----|-------------------------------------------------------------------------------------------------------|
| `s` | [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)!:the detail message. |