public class Explain_Test { public static void main(String[] args) throws Exception { FlinkEnv flinkEnv = FlinkEnvUtils.getStreamTableEnv(args); flinkEnv.env().setParallelism(1); String sql = "CREATE TABLE source_table (\n" + " user_id BIGINT COMMENT '用户 id',\n" + " name STRING...
public class Explain_Test{public static void main(String[]args)throws Exception{FlinkEnv flinkEnv=FlinkEnvUtils.getStreamTableEnv(args);flinkEnv.env().setParallelism(1);String sql="CREATE TABLE source_table (\n"+" user_id BIGINT COMMENT '用户 id',\n"+" name STRING COMMENT '用户姓名',\n...
public static void main(String[] args){ Student stu = new Student(); stu.name = "kk"; stu.height = 172; stu.rest(); Student stu2 = new Student("xx",150,"Science"); } } class Person{ String name; int height; public void rest(){ System.out.println("休息一会儿!"); } } clas...
public class Explain_Test { public static void main(String[] args) throws Exception { FlinkEnv flinkEnv = FlinkEnvUtils.getStreamTableEnv(args); flinkEnv.env().setParallelism(); String sql = "CREATE TABLE source_table (\n" + " user_id BIGINT COMMENT '用户 id',\n" + " name STRING ...
public static void main(String[] args) throws Exception { FlinkEnv flinkEnv = FlinkEnvUtils.getStreamTableEnv(args); flinkEnv.env().setParallelism(); String sql = "CREATE TABLE source_table (\n" + " user_id BIGINT COMMENT '用户 id',\n" ...
public class Demo01 { public static void main(String[] args) { File imgFile = new File("d:" + File.separator + "001.jpg"); InputStream is = null; try { is = new FileInputStream(imgFile); } catch (FileNotFoundException e1) { ...
(SpringApplication类提供了一种便利的方式以便引导Spring应用从#main启动,大多数情况下,可以通过静态方法SpringApplication#run代理启动) How TO UseSpringApplication @EnableAutoConfigurationpublicclassMyApplication{// ... Bean definitionspublicstaticvoidmain(String[] args)throwsException { ...
*/packagetestPG;importjava.sql.Connection;importjava.sql.DriverManager;importjava.sql.PreparedStatement;importjava.sql.ResultSet;importjava.sql.SQLException;publicclassTestAutoExplain{publicstaticvoidmain(String[] args){try(Connectionconn=DriverManager.getConnection("jdbc:postgresql://192.168.26.28:5432/testdb...
public static void main(String[] args) { ServiceLoader<Car> load = ServiceLoader.load(Car.class); Iterator<Car> iterator = load.iterator(); while (iterator.hasNext()) { Car car = iterator.next(); car.getPrice(); } } } The above example briefly introduces the use of theJDK SPImechanis...
public class WrapperClassExample { public static void main(String[] args) { // Creating an ArrayList to store Integer objects ArrayList<Integer> intList = new ArrayList<>(); // Adding primitive int values using autoboxing intList.add(10); intList.add(20); intList.add(30); ...