* Fix a scalability issue where high rates of event writes degraded etcd performance. ([#64539](https://github.com/kubernetes/kubernetes/pull/64539), [@ccding](https://github.com/ccding))

import org.codelibs.core.io.ResourceBundleUtil;
import org.codelibs.core.misc.DisposableUtil;
import org.codelibs.core.misc.LocaleUtil;

/**
 * Class for assembling messages from message codes and arguments.
 *
 * @author higa
 */
public abstract class MessageFormatter {

    /**
     * Do not instantiate.
     */
    protected MessageFormatter() {
    }

    /** Length of the numeric part of the message code */

import java.sql.SQLException;
import java.sql.Statement;

import org.codelibs.core.exception.SQLRuntimeException;
import org.codelibs.core.log.Logger;

/**
 * Utility class for {@link Statement}.
 *
 * @author higa
 */
public abstract class StatementUtil {

    private static final Logger logger = Logger.getLogger(StatementUtil.class);

    /**
     * Do not instantiate.
     */
    protected StatementUtil() {
    }

 */
package org.codelibs.core.misc;

import org.codelibs.core.collection.ArrayUtil;
import org.codelibs.core.lang.StringUtil;

/**
 * Utility class for handling Base64 encoding and decoding.
 *
 * @author higa
 */
public abstract class Base64Util {

    /**
     * Do not instantiate.
     */
    protected Base64Util() {
    }

import java.util.Properties;

import org.codelibs.core.exception.IORuntimeException;
import org.codelibs.core.net.URLUtil;

/**
 * Utility class for {@link Properties} operations.
 *
 * @author higa
 */
public abstract class PropertiesUtil {

    /**
     * Do not instantiate.
     */
    protected PropertiesUtil() {
    }

    /**

import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;

import org.codelibs.core.exception.IORuntimeException;

/**
 * Utility class for {@link Reader} operations.
 *
 * @author higa
 */
public abstract class ReaderUtil {

    /**
     * Do not instantiate.
     */
    protected ReaderUtil() {
    }

    /** Default buffer size */
    private static final int BUF_SIZE = 4096;

import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotEmpty;
import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotNull;

/**
 * A class that recognizes tokens.
 *
 * @author higa
 *
 */
public class Tokenizer {

    /**
     * Represents EOF (End of File).
     */
    public static final int TT_EOF = -1;

    /**
     * Represents a Quote.
     */

import org.codelibs.core.io.FileUtil;
import org.codelibs.core.log.Logger;
import org.codelibs.core.net.URLUtil;

/**
 * Utility class for handling {@link java.util.zip.ZipFile}.
 *
 * @author higa
 */
public abstract class ZipFileUtil {

    private static final Logger logger = Logger.getLogger(ZipFileUtil.class);

    /**
     * Do not instantiate.
     */
    protected ZipFileUtil() {
    }

import java.util.NoSuchElementException;

import org.codelibs.core.exception.ClIndexOutOfBoundsException;
import org.codelibs.core.io.SerializeUtil;
import org.junit.Test;

/**
 * @author higa
 */
public class SLinkedListTest {

    private final SLinkedList<String> list = new SLinkedList<String>();

    /**
     * @throws Exception
     */
    @Test

import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

import org.codelibs.core.misc.LocaleUtil;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 * @author higa
 */
public class TimeConversionUtilTest {

    @Before
    public void setUp() throws Exception {
        LocaleUtil.setDefault(() -> Locale.JAPANESE);
    }

    @After