PROJECT
  - classes
      tunnelvisionlabs
          postgresql
              PostgreSqlLexer.class
              PostgreSqlLexerAtnSimulator.class
              PostgreSqlLexerUtils.class
  - lib
      antlr-4-7.jar

  - BasicTest.java

package com.tunnelvisionlabs.postgresql.test;

import com.tunnelvisionlabs.postgresql.PostgreSqlLexer;
import com.tunnelvisionlabs.postgresql.PostgreSqlLexerUtils;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.antlr.v4.runtime.ANTLRInputStream;
import org.antlr.v4.runtime.CommonTokenStream;
import org.antlr.v4.runtime.Lexer;
import org.antlr.v4.runtime.Token;
import org.junit.Assert;
import org.junit.Test;

javac -cp .:./lib/* BasicTests.java

BasicTests.java:28: error: cannot find symbol
import com.tunnelvisionlabs.postgresql.PostgreSqlLexer;
                                      ^
  symbol:   class PostgreSqlLexer
  location: package com.tunnelvisionlabs.postgresql
BasicTests.java:29: error: cannot find symbol
import com.tunnelvisionlabs.postgresql.PostgreSqlLexerUtils;
                                      ^
  symbol:   class PostgreSqlLexerUtils
  location: package com.tunnelvisionlabs.postgresql

package com.tunnelvisionlabs.postgresql;