MU
mutkuensert/SafeCallJava
A simple class to prevent NullPointerExceptions in Java
SafeCallJava
A simple class to prevent NullPointerExceptions in Java
/**
* Prevents [NullPointerException] in java
*/
object SafeCall {
@JvmStatic
fun <T : Any> get(block: () -> T): T? {
return try {
block.invoke()
} catch (_: NullPointerException) {
null
}
}
@JvmStatic
fun <T : Any> getOrElse(block: () -> T, default: T): T {
return try {
block.invoke()
} catch (_: NullPointerException) {
default
}
}
@JvmStatic
fun call(block: Runnable) {
try {
block.run()
} catch (_: NullPointerException) {
}
}
}
Usage in Java
SafeCall.get(() -> getSomeObj().getProperty());If getSomeObj method returns null, instead of throwing a NullPointerException, SafeCall::get will return null.