Brainf*ck interpreter

import java.io.*;
public class BrainFuckCompile {
    static StringBuffer ostr;
    static char[] fileRead(String inputFilePath) throws IOException{
    	char[] a;
    	FileInputStream in=
    			new FileInputStream(new File(inputFilePath));
    	byte[] b=new byte[in.available()];
    	in.read(b);
    	a=new String(b).toCharArray();
    	return a;
    }
    
    static void fileWrite(String outputFilePath) throws IOException{
    	FileOutputStream o=
    			new FileOutputStream (new File(outputFilePath));
    	o.write(ostr.toString().getBytes());
    } 
    
    static void translate(char[] data){
    	String s;
    	for(int i=0;i<data.length;i++){
    		s="";
    		switch(data[i]){
    		case '+':s="(*ptr)++;";break;
    		case '-':s="(*ptr)--;";break;
    		case '>':s="ptr++;";break;
    		case '<':s="ptr--;";break;
    		case '.':s="putchar(*ptr);";break;
    		case ',':s="*ptr=getchar();";break;
    		case '[':s="\n while(*ptr){";break;
    		case ']':s="}\n";break;
    		}
    		ostr.append(s);
    	}
    	ostr.append("return 0;\n}");
    }
    
    public static void main(String[] args){
    	try{
		ostr=new StringBuffer();
    		char[] c=fileRead(args[0]);
    		ostr.append("#include <stdio.h>\n");
    		ostr.append("int main(){\n");
    		ostr.append("char mem[65536];");
    		ostr.append("char *ptr=mem;");
    		translate(c);
    		fileWrite(args[0]+".c");
    	}catch(IOException e){}
    }
}