JDK 11 jdk.charsets.jmod is the JMOD file for JDK 11 Charsets module.

JDK 11 Charsets module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.charsets.jmod.

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

JDK 11 Charsets module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.charsets.

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

⏎ sun/nio/cs/ext/IBM943C.java

/*
 * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package sun.nio.cs.ext;

import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
import java.util.Arrays;
import sun.nio.cs.DoubleByte;
import sun.nio.cs.HistoricallyNamedCharset;

public class IBM943C extends Charset implements HistoricallyNamedCharset
{

    public IBM943C() {
        super("x-IBM943C", ExtendedCharsets.aliasesFor("x-IBM943C"));
    }

    public String historicalName() {
        return "Cp943C";
    }

    public boolean contains(Charset cs) {
        return ((cs.name().equals("US-ASCII"))
                || (cs instanceof IBM943C));
    }

    public CharsetDecoder newDecoder() {
        return new DoubleByte.Decoder(this,
                                      IBM943.b2c,
                                      b2cSB,
                                      0x40,
                                      0xfc);
    }

    public CharsetEncoder newEncoder() {
        return new DoubleByte.Encoder(this, c2b, c2bIndex);
    }

    final static char[] b2cSB;
    final static char[] c2b;
    final static char[] c2bIndex;

    static {
        IBM943.initb2c();
        b2cSB = new char[0x100];
        for (int i = 0; i < 0x80; i++) {
            b2cSB[i] = (char)i;
        }
        for (int i = 0x80; i < 0x100; i++) {
            b2cSB[i] = IBM943.b2cSB[i];
        }

        IBM943.initc2b();
        c2b = Arrays.copyOf(IBM943.c2b, IBM943.c2b.length);
        c2bIndex = Arrays.copyOf(IBM943.c2bIndex, IBM943.c2bIndex.length);
        for (char c = '\0'; c < '\u0080'; ++c) {
            int index = c2bIndex[c >> 8];
            c2b[index + (c & 0xff)] = c;
        }
    }
}

⏎ sun/nio/cs/ext/IBM943C.java

Or download all of them as a single archive file:

File name: jdk.charsets-11.0.1-src.zip
File size: 1640421 bytes
Release date: 2018-11-04
Download 

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