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String bookName = bookNameField.getText();
if (!"".equals(bookName)) {
bookNamePred = (name) -> {
return name.equals(bookName);
};
} else {
bookNamePred = (e) -> {
return true;
};
}
String authorName = athorNameField.getText();
if (!"".equals(authorName)) {
authorNamePred = (name) -> {
return name.equals(authorName);
};
} else {
authorNamePred = (e) -> {
return true;
};
}
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