Thread: package org.antlr.v4.runtime does not exist

This is my code :

import java.io.*;
import java.util.*;
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.tree.*;

class Lexicon {

public static Trie<List<Entry>> load() throws IOException, ParseError {
ANTLRInputStream input = new ANTLRInputStream(new InputStreamReader(
Main.class.getResourceAsStream("/lexicon.txt"), "UTF-8"));
LexiconLexer lexer = new LexiconLexer(input);
CommonTokenStream tokens = new CommonTokenStream(lexer);
LexiconParser parser = new LexiconParser(tokens);
LexiconParser.ListContext list = parser.expr().list();
Entry[] entries = new Entry[list.item().size()];
int i = 0;

And I got this error :

package org.antlr.v4.runtime does not exist
package org.antlr.v4.runtime.tress does not exist
cannot find symbol class ANTLRInputStream
cannot find symbol class Main
cannot find symbol class LexiconLexer
cannot find symbol class CommonTokenStream
cannot find symbol class LexiconParser
package LexiconParser does not exist

Can someone help me? Thank You

ANTLR is not included in the Java API. it is a separate capability and library that needs to be downloaded and referenced to use.

Regards,
Jim

I already download ANTLR file (antlr-runtime-4.0.jar) on windows 10. How's to install jar file on windows?

How are you compiling your code? And IDE, command prompt using javac?

Regards,
Jim

Unfortunately, I am not familiar with that IDE. I recommend you do a web search on how to add libraries to JCreator.

Regards,
Jim