JDK 17 jdk.compiler.jmod is the JMOD file for JDK 17 Compiler tool, which can be invoked by the "javac" command.

JDK 17 Compiler tool compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\jdk.compiler.jmod.

JDK 17 Compiler tool compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.

JDK 17 Compiler source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\jdk.compiler.

You can click and view the content of each source code file in the list below.

⏎ com/sun/tools/javac/jvm/ModuleNameReader.java

/*
 * Copyright (c) 1999, 2020, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package com.sun.tools.javac.jvm;

import com.sun.tools.javac.util.ByteBuffer;
import com.sun.tools.javac.util.Convert;
import com.sun.tools.javac.util.Name.NameMapper;

import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;

import javax.tools.JavaFileObject;

import static com.sun.tools.javac.jvm.ClassFile.*;


/**
 * Stripped down ClassReader, just sufficient to read module names from module-info.class files
 * while analyzing the module path.
 *
 * <p>
 * <b>This is NOT part of any supported API. If you write code that depends on this, you do so at
 * your own risk. This code and its internal interfaces are subject to change or deletion without
 * notice.</b>
 */
public class ModuleNameReader {
    public static class BadClassFile extends Exception {
        private static final long serialVersionUID = 0;
        BadClassFile(String msg) {
            super(msg);
        }
    }

    private static final int INITIAL_BUFFER_SIZE = 0x0fff0;

    /** The buffer containing the currently read class file.
     */
    private ByteBuffer buf = new ByteBuffer(INITIAL_BUFFER_SIZE);

    /** The current input pointer.
     */
    private int bp;

    /** The constant pool reader.
     */
    private PoolReader reader;

    public ModuleNameReader() {
    }

    public String readModuleName(Path p) throws IOException, BadClassFile {
        try (InputStream in = Files.newInputStream(p)) {
            return readModuleName(in);
        }
    }

    public String readModuleName(JavaFileObject jfo) throws IOException, BadClassFile {
        try (InputStream in = jfo.openInputStream()) {
            return readModuleName(in);
        }
    }

    public String readModuleName(InputStream in) throws IOException, BadClassFile {
        bp = 0;
        buf.reset();
        buf.appendStream(in);

        int magic = nextInt();
        if (magic != JAVA_MAGIC)
            throw new BadClassFile("illegal.start.of.class.file");

        int minorVersion = nextChar();
        int majorVersion = nextChar();
        if (majorVersion < 53)
            throw new BadClassFile("bad major version number for module: " + majorVersion);

        reader = new PoolReader(buf);
        bp = reader.readPool(buf, bp);

        int access_flags = nextChar();
        if (access_flags != 0x8000)
            throw new BadClassFile("invalid access flags for module: 0x" + Integer.toHexString(access_flags));

        int this_class = nextChar();
        // could, should, check this_class == CONSTANT_Class("module-info")
        checkZero(nextChar(), "super_class");
        checkZero(nextChar(), "interface_count");
        checkZero(nextChar(), "fields_count");
        checkZero(nextChar(), "methods_count");
        int attributes_count = nextChar();
        for (int i = 0; i < attributes_count; i++) {
            int attr_name = nextChar();
            int attr_length = nextInt();
            if (reader.peekName(attr_name, utf8Mapper(false)).equals("Module") && attr_length > 2) {
                return reader.peekModuleName(nextChar(), utf8Mapper(true));
            } else {
                // skip over unknown attributes
                bp += attr_length;
            }
        }
        throw new BadClassFile("no Module attribute");
    }

    void checkZero(int count, String name) throws BadClassFile {
        if (count != 0)
            throw new BadClassFile("invalid " + name + " for module: " + count);
    }

    /** Read a character.
     */
    char nextChar() {
        char res = buf.getChar(bp);
        bp += 2;
        return res;
    }

    /** Read an integer.
     */
    int nextInt() {
        int res = buf.getInt(bp);
        bp += 4;
        return res;
    }

    NameMapper<String> utf8Mapper(boolean internalize) {
        return internalize ?
                (buf, offset, len) ->
                    Convert.utf2string(ClassFile.internalize(buf, offset, len)) :
                Convert::utf2string;
    }

}

⏎ com/sun/tools/javac/jvm/ModuleNameReader.java

Or download all of them as a single archive file:

File name: jdk.compiler-17.0.5-src.zip
File size: 1450209 bytes
Release date: 2022-09-13
Download 

⇒ JDK 17 jdk.crypto.cryptoki.jmod - Crypto KI Module

⇐ JDK 17 jdk.charsets.jmod - Charsets Module

⇑ JDK 17 JMod/Module Files

⇑⇑ FAQ for JDK (Java Development Kit) 17