Backup mysql database from Java using mysqldump failed

I am using mysqldump like this:

Runtime.getRuntime().exec("mysqldump -u USERNAME -pPASSWORD DBNAME > /path/to/location/backup.sql");

in order to dump it into my local files, my java program is deployed using kubernetes. Here is my code:

 @RequestMapping(value = "/testDumping", method = {RequestMethod.POST, RequestMethod.GET})
public Object test(@RequestBody Map<String,Object> params) throws IOException {
    String runStatement = (String)params.get("runStatement");
    Runtime runtime = Runtime.getRuntime();
    Process exec = runtime.exec(runStatement);
    return exec;
}

And I finally got this exception "java.io.IOException: Cannot run program "mysqldump": error=2, No such file or directory". What is the problem here?

Copyright License：
Author:「Xiaoyu Wu」,Reproduced under the CC 4.0 BY-SA copyright license with link to original source & disclaimer.
Link to：https://stackoverflow.com/questions/68196117/backup-mysql-database-from-java-using-mysqldump-failed