Question

Pretty new to Java programming, but I’m having trouble getting this to run. I want to read in a word using the StringBuffer class, then reverse it. I am fairly unfamiliar with importing Java libraries, so I’m not sure if I did that correctly. Either way, this is what I have. I tried to compile it (I’m working in the Terminal), but got a few compiler errors. Any help would be appreciated.

import java.util;
import java.io;

public class HW1A {

  public static void main (String[] args) {
     printBackwards();
  }

  public static void printBackwards (String[] args) {
     StringBuffer backwards = new StringBuffer(args);
     System.out.println(backwards.reverse());
  }

}

I get the following complier errors:

HW1A.java:1: cannot find symbol
symbol : class util
location: package java
import java.util;
^
HW1A.java:2: cannot find symbol
symbol : class io
location: package java
import java.io;

Thanks.

Answer 1

Two corrections:

import java.io.*;

To import everything in java.io.

And:

printBackwards(args);

To pass args to your printBackwards method (you declared it correctly, but didn’t pass the variable).