tomcat-vault's CLI error handling needs work

1) Install tomcat-vault 2) Pass an incomplete command to vault to see how it behaves. Examples (excluding the banner for brevity): $ bin/vault.sh -t a .... Problem while parsing command line parameters: org.apache.commons.cli.MissingOptionException: Missing required option: [-c Check whether the secured attribute already exists in the vault, -x Secured attribute value (such as password) to store, -h Help] at org.apache.commons.cli.Parser.checkRequiredOptions(Parser.java:299) at org.apache.commons.cli.Parser.parse(Parser.java:231) at org.apache.commons.cli.Parser.parse(Parser.java:119) at org.apache.tomcat.vault.VaultTool.<init>(VaultTool.java:134) at org.apache.tomcat.vault.VaultTool.main(VaultTool.java:79) $ bin/vault.sh .... Please enter a Digit:: 0: Start Interactive Session 1: Remove Interactive Session 2: Exit a Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Scanner.java:864) at java.util.Scanner.next(Scanner.java:1485) at java.util.Scanner.nextInt(Scanner.java:2117) at java.util.Scanner.nextInt(Scanner.java:2076) at org.apache.tomcat.vault.VaultTool.main(VaultTool.java:109)