8.0w+
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public class StandaloneWriter extends XMLWriter {
protected void writeDeclaration() throws IOException {
OutputFormat format = getOutputFormat();
String encoding = format.getEncoding();
if (!format.isSuppressDeclaration()) {
if (encoding.equals("UTF8")) {
writer.write("<?xml version=\"1.0\"");
if (!format.isOmitEncoding()) {
writer.write(" encoding=\"UTF-8\"");
}
writer.write(" standalone=\"true\"");
writer.write("?>");
} else {
writer.write("<?xml version=\"1.0\"");
if (!format.isOmitEncoding()) {
writer.write(" encoding=\"" + encoding + "\"");
}
writer.write(" standalone=\"true\"");
writer.write("?>");
}
if (format.isNewLineAfterDeclaration()) {
println();
}
}
}