1 package polyglot.main; 2 3 /** An exception used to indicate a command-line usage error. */ 4 public class UsageError extends Exception { 5 final int exitCode; 6 public UsageError(String s) { this(s,1); } 7 public UsageError(String s, int exitCode) { 8 super(s); 9 this.exitCode = exitCode; 10 } 11 } 12