如何在java中更新dataframe的所有列

import org.apache.spark.sql.Dataset;
import org.apache.spark.sql.Row;
import org.apache.spark.sql.SparkSession;
import org.apache.spark.sql.functions;

SparkSession spark = SparkSession.builder()
        .appName("DataFrame Update")
        .master("local")
        .getOrCreate();

Dataset<Row> df = spark.read()
        .format("csv")
        .option("header", "true")
        .load("path/to/input.csv");

Dataset<Row> updatedDF = df.withColumn("column1", functions.expr("column1 + 1"))
        .withColumn("column2", functions.expr("column2 * 2"))
        .withColumn("column3", functions.expr("column3 - 1"));

updatedDF.show();