public final class ProtocolConstants { public final char RECORD_SEPARATOR = 0x1e; public final char END_OF_TEXT = 0x03; private ProtocolConstants() {}}这样的东西?

public final class ProtocolConstants { public final char RECORD_SEPARATOR = 0x1e; public final char END_OF_TEXT = 0x03; private ProtocolConstants() {}}这样的东西?