assertEquals(-1, p1.getLineNumber());
        assertEquals(-1, p1.getColumnNumber());
        assertNull(p1.getException());

        Problem p2 = collector.getProblems().get(1);
        assertEquals(Severity.WARNING, p2.getSeverity());
        assertEquals("", p2.getMessage());
        assertEquals(42, p2.getLineNumber());
        assertEquals(127, p2.getColumnNumber());
        assertEquals(e2, p2.getException());
    }

    @Test

        assertEquals(-1, problem.getColumnNumber());

        problem = new DefaultProblem(null, null, null, -1, 42, null);
        assertEquals(42, problem.getColumnNumber());

        problem = new DefaultProblem(null, null, null, -1, Integer.MAX_VALUE, null);
        assertEquals(Integer.MAX_VALUE, problem.getColumnNumber());

        // this case is not specified, might also return -1

                buffer.append(", ");
            }
            buffer.append("line ").append(getLineNumber());
        }

        if (getColumnNumber() > 0) {
            if (!buffer.isEmpty()) {
                buffer.append(", ");
            }
            buffer.append("column ").append(getColumnNumber());
        }

        return buffer.toString();
    }

    @Override
    public Exception getException() {

     * @return The one-based index of the column containing the problem or non-positive value if unknown.
     */
    int getColumnNumber();

    /**
     * Gets the location of the problem. The location is a user-friendly combination of the values from
     * {@link #getSource()}, {@link #getLineNumber()} and {@link #getColumnNumber()}. The exact syntax of the returned
     * value is undefined.
     *

            if (e.getSystemId() != null) {
                buf.append(" at ").append(e.getSystemId());
            }
            final int lineNumber = e.getLineNumber();
            final int columnNumber = e.getColumnNumber();
            buf.append("( lineNumber = ").append(lineNumber).append(", columnNumber = ").append(columnNumber).append(")");
        }
        return new String(buf);
    }

        this.locations = original.locations;
        this.importedFrom = original.importedFrom;
    }

    public int getLineNumber() {
        return lineNumber;
    }

    public int getColumnNumber() {
        return columnNumber;
    }

    public InputSource getSource() {
        return source;
    }

    @Override
    public InputLocation getLocation(Object key) {

      </fields>
      <codeSegments>
        <codeSegment>
          <version>1.2.0+</version>
          <code>

    @Override
    public String toString() {
        return getLineNumber() + " : " + getColumnNumber() + ", " + getSource();
    }
          </code>
        </codeSegment>
      </codeSegments>
    </class>
    <class sourceTracker="source">
      <name>InputSource</name>

      <codeSegments>
        <codeSegment>
          <version>2.0.0+</version>
          <code>

    @Override
    public String toString() {
        return getLineNumber() + " : " + getColumnNumber() + ", " + getSource();
    }
          </code>
        </codeSegment>
      </codeSegments>
    </class>
    <class sourceTracker="source">
      <name>InputSource</name>

        <codeSegment>
          <version>4.0.0+</version>
          <code>
            <![CDATA[

    @Override
    public String toString() {
        return getLineNumber() + " : " + getColumnNumber() + ", " + getSource();
    }
            ]]>
          </code>
        </codeSegment>
      </codeSegments>
    </class>
    <class sourceTracker="source">
      <name>InputSource</name>