// Open the document
Document doc = new Document(dataPath + "tableDoc.doc");

Table table = (Table)doc.getChild(NodeType.TABLE, 0, true);
// Autofit the first table to the page width.
table.autoFit(AutoFitBehavior.AUTO_FIT_TO_WINDOW);

Table table2 = (Table)doc.getChild(NodeType.TABLE, 1, true);
// Auto fit the table to the cell contents
table2.autoFit(AutoFitBehavior.AUTO_FIT_TO_CONTENTS);