}

    /**
     * Escapes specific characters in a query string.
     * Replaces each specified character with its escaped version (prefixed with backslash).
     *
     * @param q the query string to escape
     * @param values the characters to escape
     * @return the escaped query string
     */
    protected String escape(final String q, final String... values) {
        String value = q;

 *
 */
public class JsonUtil {

    /**
     * Defualt constructor.
     */
    protected JsonUtil() {
    }

    /**
     * Escapes a value as Json string.
     *
     * @param value input
     * @return escaped string.
     */
    public static String escape(final String value) {
        if (value == null) {
            return null;
        }

        char c;
        final int len = value.length();

            return escape(s) + ".*";
        }
        final StringBuilder buf = new StringBuilder(100);
        return appendFileterPath(buf, escape(s));
    }

    /**
     * Escapes special regex characters in a string to create a literal pattern.

    }

    /**
     * Escapes a callback name.
     * @param callbackName The callback name.
     * @return The escaped callback name.
     */
    protected String escapeCallbackName(final String callbackName) {
        return "/**/" + callbackName.replaceAll("[^0-9a-zA-Z_\\$\\.]", StringUtil.EMPTY);
    }

    /**
     * Escapes a JSON object.
     * @param obj The object to escape.

            return OptionalThing.of(key.toString());
        }
        return OptionalThing.empty();
    }

    /**
     * Escapes special characters in a value string for safe logging.
     *
     * @param action the string value to escape
     * @return the escaped string with tabs replaced by spaces
     */
    protected String escapeValue(final String action) {
        return action.replace('\t', ' ');
    }

        }
    }

    /**
     * Escapes wildcard characters in the given query string.
     *
     * This method replaces all occurrences of '*' with '\*' and
     * all occurrences of '?' with '\?' to ensure that these characters
     * are treated as literals rather than wildcard characters in queries.
     *
     * @param query the query string to escape
     * @return the escaped query string
     */

});
```

### Text Processing and JSON
```java
import org.codelibs.core.text.*;

// JSON utilities with proper escaping
String escaped = JsonUtil.escape("Hello \"World\" with special chars");
String unescaped = JsonUtil.unescape(escaped);

// Text tokenization
Tokenizer tokenizer = new Tokenizer("field1,field2,field3", ",");
while (tokenizer.hasMoreTokens()) {

    }

    public void test_unescape() throws Exception {
        // Test with escaped characters (backslash sequences)
        String content = "test\\t1\n" + // escaped tab sequence
                "test\\n2\n" + // escaped newline sequence
                "test3\n"; // no escape

        // Write content to test file
        writeTestFile(content);

        // Reload the file

DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'

# Collect all arguments for the java command:
#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
#     and any embedded shellness will be escaped.
#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
#     treated as '${Hostname}' itself on the command line.

set -- \

        return StringUtil.EMPTY;
    }

    /**
     * Escapes HTML and applies highlighting to text.
     * Handles boundary position detection if enabled.
     *
     * @param text the text to process
     * @return the escaped and highlighted text
     */
    protected String escapeHighlight(final String text) {
        final String escaped = LaFunctions.h(text);
        final String value;