Description Hans-Jurgen Greiner 2004-02-11 13:24:29 EST

Given the Class below to test some code why I am getting strange behavior
I am getting an error from Eclipse:
"Unhandled exception type IOException"
On lines of the .append(ch);  Where I am appending only a char.  To either 
StringBuilder or StringBuffer
I must surround the invocation with a try catch and it works only in eclipse,  
but since the method does not throw an exception.  If I try to compile the code 
with the try catch outside of Eclipse.  It will flag the error as the following:
Test.java:32: exception java.io.IOException is never thrown in body of 
corresponding try statement
      catch (IOException e)

I am also getting another Error. On the Line Where I am chaining several 
appends together of strings.
"The type AbstractStringBuilder is not visible"
This ocurrs on the line of code where I am doing the following.
sb.append("Hello").append(" ").append("World");

Interesting.  When I make each append() invocation terminted with a semicolon, 
it works fine.


I have compiled the Code outside of eclipse, and there are no errors nor 
warnings. and the code also runs - I am attaching the code and the Java Version.
I am doing this on both a Windows 2000 OS and Windows XP OS

C:\Temp>javac -version
javac 1.5.0-beta
javac: no source files


public class Test
{
  public static void main( String[] args )
  {
    int n = 10;
    char ch = '*';
    StringBuilder szBuild = new StringBuilder(n);
    for (int nPos = 0; nPos < n; nPos++)
    {
      szBuild.append(ch); // append 1 to n characters ch
    }
    StringBuffer szBuff = new StringBuffer(n);
    for (int nPos = 0; nPos < n; nPos++)
    {
      szBuff.append(ch); // append 1 to n characters ch
    }
    System.out.println(szBuild.toString() );
    System.out.println(szBuff.toString() );
    
    StringBuffer sb = new StringBuffer("");
    sb.append("Hello").append(" ").append("World");
    System.out.println(sb);
  }
}