I have a jar file so I tried to run the class from Mathematica following these steps https://reference.wolfram.com/language/workflow/ConnectToAnExternalJavaProgram.htmlthese steps, but I get all these:
Java::excptn: A Java exception occurred: java.lang.ClassNotFoundException: Buscar
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:398).
LoadJavaClass::fail: Java failed to load class Buscar.
Needs["JLink`"]
InstallJava[]
AddToClassPath["C:\Users\Amada\Documents\Buscar.java"]
LoadJavaClass["Buscar"]
And this is the java code,Java codel I made it with Apache-Neatbeans 11.2 and I have JDK 12 and Mathematica 12 (if it's useful)
package buscar;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class Buscar {
public static void main(String[] args) {
buscador("issue");
}
public static void buscador(String palabra){
Scanner entrada= null;
String linea;
int numdelinea= 1;
boolean contiene= false;
Scanner sc = new Scanner(System.in);
try{
File f= new File("C:/Program Files/Wolfram Research/Mathematica/12.1/Documentation/English/System/ExampleData/USConstitution.txt");
entrada= new Scanner(f);
System.out.println("Archivo: " + f.getName());
System.out.println("Texto a bucar: " + palabra);
while(entrada.hasNext()){
linea= entrada.nextLine();
if(linea.contains(palabra)){
System.out.println("Línea " + numdelinea + ": " + linea);
contiene = true;
}
numdelinea++;
}
if( !contiene){
System.out.println(palabra + "no se ha encontrado");
}
} catch (FileNotFoundException e){
System.out.println(e.toString());
}catch (NullPointerException e){
System.out.println(e.toString()+ "No se ha seleccionado ningún archivo");
}catch (Exception e){
System.out.println(e.toString());
}finally{
if(entrada !=null){
entrada.close();
}
}
}
}
package buscar;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class Buscar {
public static void main(String[] args) {
buscador("issue");
}
public static void buscador(String palabra){
Scanner entrada= null;
String linea;
int numdelinea= 1;
boolean contiene= false;
Scanner sc = new Scanner(System.in);
try{
File f= new File("C:/Program Files/Wolfram Research/Mathematica/12.1/Documentation/English/System/ExampleData/USConstitution.txt");
entrada= new Scanner(f);
System.out.println("Archivo: " + f.getName());
System.out.println("Texto a bucar: " + palabra);
while(entrada.hasNext()){
linea= entrada.nextLine();
if(linea.contains(palabra)){
System.out.println("Línea " + numdelinea + ": " + linea);
contiene = true;
}
numdelinea++;
}
if( !contiene){
System.out.println(palabra + "no se ha encontrado");
}
} catch (FileNotFoundException e){
System.out.println(e.toString());
}catch (NullPointerException e){
System.out.println(e.toString()+ "No se ha seleccionado ningún archivo");
}catch (Exception e){
System.out.println(e.toString());
}finally{
if(entrada !=null){
entrada.close();
}
}
}
}
