https://github.com/mutkuensert/safecalljava

A simple class to prevent NullPointerExceptions in Java
https://github.com/mutkuensert/safecalljava

java kotlin null null-safe null-safety nullability nullpointerexception

Last synced: about 1 year ago
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A simple class to prevent NullPointerExceptions in Java

• Host: GitHub
• URL: https://github.com/mutkuensert/safecalljava
• Owner: mutkuensert
• Created: 2024-12-02T08:11:30.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-12-02T14:33:40.000Z (over 1 year ago)
• Last Synced: 2025-03-29T09:13:42.772Z (about 1 year ago)
• Topics: java, kotlin, null, null-safe, null-safety, nullability, nullpointerexception
• Language: Java
• Homepage:
• Size: 3.91 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# SafeCallJava

A simple class to prevent NullPointerExceptions in Java

#### Java

```Java

import java.util.function.Supplier;

public class SafeCall {

    /**

     * Prevents NullPointerException

     */

    public static  T get(Supplier supplier) {

        try {

            return supplier.get();

        } catch (NullPointerException e) {

            return null;

        }

    }

}

```

#### Kotlin

```kotlin

object SafeCall {

    /**

     * Prevents [NullPointerException] in java

     */

    @JvmStatic

    fun  get(block: () -> T): T? {

        return try {

            block.invoke()

        } catch (e: NullPointerException) {

            null

        }

    }

}

```

## Usage in Java

```Java

SafeCall.get(() -> getSomeObj().getProperty());

```

If **getSomeObj** method returns null, instead of occurence of a NullPointerException, SafeCall::get will return null.