Name: ksC84122 Date: 04/16/99


The javadoc for JDK 1.2.2 java.lang.StringBuffer.getChars(int srcBegin, int srcEnd,
char[] dst, int dstBegin) states:
----
Throws:
         IndexOutOfBoundsException - if any of the following is true:
              srcBegin is negative
              the srcBegin argument is greater than the srcEnd argument.
              srcEnd is greater than this.length(), the current length of this
              string buffer.
              dstBegin+srcEnd-srcBegin is greater than dst.length
----

The javadoc does not specify behavior in case when
srcBegin = srcEnd = current length of StringBuffer. In fact IndexOutOfBoundsException
is thrown.

A test example which demonstrates this problem.
===== test48.java ========
public class test48 {

   public static void main (String argv[]) {
    StringBuffer sb = new StringBuffer("sample string buffer");
    char dst[] = new char[30];
    
    try {
        sb.getChars(dst.length, dst.length, dst, 0);
        System.out.println("No exception thrown");
    } catch (IndexOutOfBoundsException iobe) { //OKAY
        System.out.println("IndexOutOfBoundsException thrown");
    }
    return;
  }

}

========= Sample run (JDK1.2.2) ==========
#>java test48
IndexOutOfBoundsException thrown

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