feat:线下课：创建DataFrame

src/main/scala/org/example/sql/CreateDataFrame.scala

@@ -0,0 +1,22 @@
+package org.example.sql
+
+import org.apache.spark.sql._
+
+
+object CreateDataFrame {
+  def main(args: Array[String]): Unit = {
+    val spark = SparkSession.builder()
+      .master("local[*]")
+      .appName("DataFrameDemo")
+      .getOrCreate()
+    val data = List(
+      (1, "zhangsan", 18),
+      (2, "lisi", 18),
+      (3, "wangwu", 18)
+    )
+    import spark.implicits._
+    val df = data.toDF()
+    df.show()
+    df.printSchema()
+  }
+}