public static void main(String[] args) {
		Boolean strResult = "100".matches("-[0-9]+(.[0-9]+)?|[0-9]+(.[0-9]+)?");  
		if(strResult == true) {  
		            System.out.println("Is Number!");  
		        } else {  
		            System.out.println("Is not Number!");  
		        }  
	}

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