Java-Buddy

The example check the type of the first argument:

class hello{
 public static void main(String args[])
 { 
 if(args.length == 0){
 System.out.println("No args");
 System.exit(0);
 }
 
 if(isInt(args[0]) == true){
 System.out.println("args[0] is a integer");
 }else if(isFloat(args[0]) == true){
 System.out.println("args[0] is a float");
 }else{
 System.out.println("other");
 }
 
 System.exit(0);
 }
 
 static private boolean isInt(String str){
 
 boolean result = false;
 try{
 int num = Integer.parseInt(str);
 result = true;
 } catch (NumberFormatException e) {
 }
 return result;
 }
 
 static private boolean isFloat(String str){
 
 boolean result = false;
 try{
 float num = Float.parseFloat(str);
 result = true;
 } catch (NumberFormatException e) {
 }
 return result;
 }
}

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