JAVA

how to run java files

javac filename.java //(This will compile the program)
java filename //(This will run the file)

java run cmd

import java.io.*;

public class CmdTest {
    public static void main(String[] args) throws Exception {
        ProcessBuilder builder = new ProcessBuilder(
            "cmd.exe", "/c", "cd "C:Program FilesMicrosoft SQL Server" && dir");
        builder.redirectErrorStream(true);
        Process p = builder.start();
        BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
        String line;
        while (true) {
            line = r.readLine();
            if (line == null) { break; }
            System.out.println(line);
        }
    }
}

how to run java file

javac <yourfilename>.java
after that do:
java <yourfilename>

run java application in commande line

java -jar target/spring-cloud-gateway-keycloak-oauth2-0.0.1-SNAPSHOT.jar

java -jar target/product-service-0.0.1-SNAPSHOT.jar

java run cmd command

fun excCommand(cmd: String) {
  val rt = Runtime.getRuntime()
  try {
	 rt.exec(arrayOf("cmd.exe", "/c", cmd))
  } catch (e: IOException) {
	 // TODO Auto-generated catch block
	 e.printStackTrace()
  }
}

run java in cmd

C:UsersYour Name>javac MyClass.java