Scala-Try-Catch-Finally.sc

1.Scala-Try-Catch-Finally.sc

In this we will see various examples of Scala Exceptional Handling.

Example1.sc

try{
  val a=5
  val b=0
  a/b
} catch{
  case t: Throwable => println("Divide by zero error")
}
finally {
  println("In finally")
}

Output:
Divide by zero error
In finally

Example2.sc

try{
  opensftpreadfile("location")
} catch{
  case e: FileNotFoundException => println("Could not find file.")
  case e: IOException => println("IOException during file read")
}
finally {
  println("In finally")
}

Example3.sc

try{
  opensftpreadfile("location")
} catch{
  case e: Throwable => println("Issue Occurred Hence Existing")
}

Example4.sc

try{
  opensftpreadfile("location")
} catch{
  case e: FileNotFoundException => functionToGenerateFile()
  case e: IOException => sendEmailToSupport()
  case e: Throwable => print("Some Error")
}

Example5.sc

val x: String =try{
  val str = "GOOD"
  str.substring(0,12)
} catch{
  case e: Throwable => "Some Error"
}
finally {
  println("In finally")
}

Example6.sc

try{
  val str = "GOOD"
  str.charAt(20)
} catch{
  case e: Throwable => println("String is short")
    }

println("Reached this Step")

Output: 
String is short
Reached this Step

Example7.sc

try{
  val str = "GOOD"
  str.charAt(20)
} catch{
  case e: Throwable => println("String is short")
    throw e
    }

println("Reached this Step")

Output:
String is short
java.lang.StringIndexOutOfBoundsException: String index out of range: 20