* faster, produces the same output across Java releases, and hashes every {@code char} in the
   * input, even if some are invalid.
   */
  HashCode hashString(CharSequence input, Charset charset);

  /**
   * Shortcut for {@code newHasher().putObject(instance, funnel).hash()}. The implementation

   * faster, produces the same output across Java releases, and hashes every {@code char} in the
   * input, even if some are invalid.
   */
  HashCode hashString(CharSequence input, Charset charset);

  /**
   * Shortcut for {@code newHasher().putObject(instance, funnel).hash()}. The implementation

import static org.junit.Assert.assertTrue;

import java.net.MalformedURLException;
import java.net.URL;
import java.net.UnknownHostException;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.charset.UnsupportedCharsetException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;

import org.junit.Assume;

                continue;
            }

            char ch = s.charAt(pos);
            pos++;
            if (ch == '\\') {
                sb.append(ch);
                if (pos >= end) {
                    break; // ERROR, or let it go?
                }
                ch = s.charAt(pos);
                pos++;
            }

            sb.append(ch);
        }

import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.nio.charset.Charset;
import java.util.Iterator;
import java.util.stream.Stream;

/**
 * A destination to which characters can be written, such as a text file. Unlike a {@link Writer}, a

        this.resolveSids = resolveSids;
    }

    /**
     * @return the charset
     */
    public String getCharset() {
        return charset;
    }

    /**
     * @param charset
     *            the charset to set
     */
    public void setCharset(final String charset) {
        this.charset = charset;
    }

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.nio.charset.Charset

tasks.register("verifyIsProductionBuildEnvironment") {
    doLast {
        val systemCharset = Charset.defaultCharset().name()
        assert(systemCharset == "UTF-8") {
            "Platform encoding must be UTF-8. Is currently $systemCharset. Set -Dfile.encoding=UTF-8"

    public static final String MIN_ELEMENT = "a";
    public static final String AFTER_LAST = "z";
    public static final String AFTER_LAST_2 = "zz";
  }

  public static class Chars extends SampleElements<Character> {
    public Chars() {
      // elements aren't sorted, to better test SortedSet iteration ordering
      super('b', 'a', 'c', 'd', 'e');
    }
  }

  public static class Enums extends SampleElements<AnEnum> {

    public void next(int n) {
        pos += n;
    }

    public boolean lookingAt(char c) {
        return input.charAt(pos) == c;
    }

    public boolean lookingAt(CharSequence prefix) {
        int i = 0;
        int cpos = pos;
        while (i < prefix.length() && cpos < input.length()) {
            if (prefix.charAt(i) != input.charAt(cpos)) {
                return false;
            }
            i++;

    for (int i = 0; i < charsToRead; i++) {
      target.put(seq.charAt(pos++));
    }
    return charsToRead;
  }

  @Override
  public synchronized int read() throws IOException {
    checkOpen();
    requireNonNull(seq); // safe because of checkOpen
    return hasRemaining() ? seq.charAt(pos++) : -1;
  }

  @Override
  public synchronized int read(char[] cbuf, int off, int len) throws IOException {