JDK 11 jdk.jdeps.jmod is the JMOD file for JDK 11 JDeps tool, which can be invoked by the "jdeps" command.

JDK 11 JDeps tool compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.jdeps.jmod.

JDK 11 JDeps tool compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.

JDK 11 JDeps tool source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.jdeps.

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

⏎ com/sun/tools/classfile/ClassReader.java

/*
 * Copyright (c) 2007, 2008, 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.classfile;

import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Objects;

/**
 *  <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 ClassReader {
    ClassReader(ClassFile classFile, InputStream in, Attribute.Factory attributeFactory) throws IOException {
        this.classFile = Objects.requireNonNull(classFile);
        this.attributeFactory = Objects.requireNonNull(attributeFactory);
        this.in = new DataInputStream(new BufferedInputStream(in));
    }

    ClassFile getClassFile() {
        return classFile;
    }

    ConstantPool getConstantPool() {
        return classFile.constant_pool;
    }

    public Attribute readAttribute() throws IOException {
        int name_index = readUnsignedShort();
        int length = readInt();
        byte[] data = new byte[length];
        readFully(data);

        DataInputStream prev = in;
        in = new DataInputStream(new ByteArrayInputStream(data));
        try {
            return attributeFactory.createAttribute(this, name_index, data);
        } finally {
            in = prev;
        }
    }

    public void readFully(byte[] b) throws IOException {
        in.readFully(b);
    }

    public int readUnsignedByte() throws IOException {
        return in.readUnsignedByte();
    }

    public int readUnsignedShort() throws IOException {
        return in.readUnsignedShort();
    }

    public int readInt() throws IOException {
        return in.readInt();
    }

    public long readLong() throws IOException {
        return in.readLong();
    }

    public float readFloat() throws IOException {
        return in.readFloat();
    }

    public double readDouble() throws IOException {
        return in.readDouble();
    }

    public String readUTF() throws IOException {
        return in.readUTF();
    }

    private DataInputStream in;
    private ClassFile classFile;
    private Attribute.Factory attributeFactory;
}

⏎ com/sun/tools/classfile/ClassReader.java

Or download all of them as a single archive file:

File name: jdk.jdeps-11.0.1-src.zip
File size: 244145 bytes
Release date: 2018-11-04
Download 

⇒ JDK 11 jdk.jdi.jmod - JDI Tool

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