/**
 * Get the version of the Java VM in use.
 * Async version.
 *
 * @see getJavaVersionSync
 * @returns the java version string
 */
export declare function getJavaVersion(): Promise<string>;
/**
 * Get the version of the Java VM in use.
 * Sync version.
 *
 * This is equal to the following java implementation:
 * ```java
 * public static String getJavaVersion() {
 *     return System.getProperty("java.version");
 * }
 * ```
 *
 * @see getJavaVersion
 * @returns the java version string
 */
export declare function getJavaVersionSync(): string;