can call public static void main in php

izanzawawi

Hi!

I'm newer in php/java bridge...please help me. My problem is :

abc.java

class abc
{


   public String file;

   public String getfile(){
      return file;
  }

   public static void main(String[] arg) {

  System.out.println("cab");
  insertdata();

  }


}

public static void insertdata() {
 //declare to insert data into database;
}

It is possible to call void main method in php. How to call??? Thanks

traq

PHP isn't strongly typed. You don't declare the return type at all. A function will return (no value) when it's done executing as long as you don't return something else first. For example, these two functions behave (basically) the same:

function example_one( $arg ){
    /*  do something, but don't call return  */
    return;
}

function example_two( $arg ){
    /*  do something, but don't call return  */
}

also, in PHP classes, the controller method isn't called "main" - it's called "[man]__construct/man" (two leading underscores).

[edit]
also, not sure if you're intending to do this, but the __construct() method cannot be static in PHP.

izanzawawi

Actually my funcation already have in java code. Now i want to call that function in php which is my java file use public static void main(String[] args) to call other sub method/function. Example code :

abc.java

class abc {

public static void main ....
   {
     //submethod / function
      insertdata()
   }
}

  public static void insertdata() {

  }

My Php file :
test.php

<?php 

   $obj = new java("abc");
   $ obj -> main();

?>

When i run at browser it's error...because can't open main() method in java...It's this scenario same like php you post before or i have to change public static void main to another type mehtod..???? what should i do..

laserlight

izanzawawi wrote:
I'm newer in php/java bridge...

You are referring to PHP/Java Bridge?

izanzawawi wrote:
When i run at browser it's error...because can't open main() method in java.

What is the error message? For example, maybe the problem is that you need to supply an array of strings as the argument since the Java class' main method requires such an argument.

By the way, please post your Java code in [noparse]

[/noparse] bbcode tags and your PHP code in [noparse]

[/noparse] bbcode tags.

Bonesnap

laserlight;11002881 wrote:
You are referring to PHP/Java Bridge?

:eek: I wasn't aware this existed.

Mind = blown

izanzawawi

laserlight;11002881 wrote:
You are referring to PHP/Java Bridge?

What is the error message? For example, maybe the problem is that you need to supply an array of strings as the argument since the Java class' main method requires such an argument.

By the way, please post your Java code in [noparse]
[/noparse] bbcode tags and your PHP code in [noparse]
[/noparse] bbcode tags.

----- Hi Laser ---;

Here my coding

JAVA

public class readTxt
{

public String afile;


public String getFile()
{
	return afile;
}

public static void main(String[] arg) throws Exception
{
try {

		ConnectToMSSql db = new ConnectToMSSql();
		Connection con = db.getConnection();

                                            readTxt rt = new readTxt();
		String filename = rt.getFile();
		InsertData( con, filename);

		 con.close();

	  }
}

public static void InsertData( Connection con, String filename) throws Exception
{

try {
Statement d = con.createStatement();
d.executeUpdate( "insert into SentenceTxt (filename) " +
"values ('"+ filename +"')" );
d.close();
}
catch( SQLException exception) {
System.err.println( "Exception handler in ReadSourceFile:InsertData
exit(5): " + exception.toString() );
}

}

PHP
<?php
$filename ="abc";
$obj = new Java("readTxt");
$obj->afile = (String) $filename;
$obj->main();

echo "Test".$obj->getFile();

I already refer http://php-java-bridge.sourceforge.net/pjb/]PHP/Java Bridge for configure java bridge.

My purpose is to read text file from php and send to java file then the detail process will be continue in java because java file already have.

izanzawawi

izanzawawi;11002918 wrote:
----- Hi Laser ---;

Here my coding

JAVA

public class readTxt
{
public String afile;


public String getFile()
{
	return afile;
}
public static void main(String[] arg) throws Exception
{
try {
		ConnectToMSSql db = new ConnectToMSSql();
		Connection con = db.getConnection();

                                            readTxt rt = new readTxt();
		String filename = rt.getFile();
		InsertData( con, filename);

		 con.close();

	  }
}
public static void InsertData( Connection con, String filename) throws Exception
{

try {
Statement d = con.createStatement();
d.executeUpdate( "insert into SentenceTxt (filename) " +
"values ('"+ filename +"')" );
d.close();
}
catch( SQLException exception) {
System.err.println( "Exception handler in ReadSourceFile:InsertData
exit(5): " + exception.toString() );
}
}
}

PHP
<?php
$filename ="abc";
$obj = new Java("readTxt");
$obj->afile = (String) $filename;
$obj->main();

echo "Test".$obj->getFile();

?>

I already refer http://php-java-bridge.sourceforge.net/pjb/]PHP/Java Bridge for configure java bridge.

My purpose is to read text file from php and send to java file then the detail process will be continue in java because java file already have.

---Here this error;

[27-Apr-2012 02:08:21 UTC] PHP Fatal error: Uncaught exception 'JavaException' with message 'Java Exception java.lang.NoSuchMethodException: main
java.lang.NoSuchMethodException: main

laserlight

I told you to post your code in the appropriate bbcode tags:

public class readTxt
{
    public String afile;

public String getFile()
{
    return afile;
}

public static void main(String[] arg) throws Exception
{
    try {
        ConnectToMSSql db = new ConnectToMSSql();
        Connection con = db.getConnection();

        readTxt rt = new readTxt();
        String filename = rt.getFile();
        InsertData( con, filename);

        con.close();
    }
}

public static void InsertData( Connection con, String filename) throws Exception
{
    try {
        Statement d = con.createStatement();
        d.executeUpdate( "insert into SentenceTxt (filename) " + "values ('"+ filename +"')" );
        d.close();
    }
    catch( SQLException exception) {
        System.err.println( "Exception handler in ReadSourceFile:InsertData exit(5): " + exception.toString() );
    }
}
}

<?php
$filename ="abc";
$obj = new Java("readTxt");
$obj->afile = (String) $filename;
$obj->main();

echo "Test".$obj->getFile();

?>

Your Java class looks malformed since you have a try with no corresponding catch or finally. You need to fix that. (I assume that there are appropriate imports.) Plus, the main method probably should not be declared to throw Exception especially with that try block if you add a handler for Exception.

I speculated on the problem being a failure to pass arguments, but you did nothing to see if changing that would work. Try:

<?php
$filename ="abc";
$obj = new Java("readTxt");
$obj->afile = (String) $filename;
$obj->main(array());

echo "Test" . $obj->getFile();

?>

Weedpacket

It may have something to do with main being a static method, not an instance method, which is how you're trying to call it. If I understand the documentation provided on the sourceforge site, calling such a method would look like

$result = Java('readTxt')->main(/*...arguments...*/);

laserlight

Weedpacket wrote:
It may have something to do with main being a static method, not an instance method, which is how you're trying to call it.

Sounds plausible, though I note that in Java the syntax for calling an instance method can be used to call a class method, though it is rarely used and may not be accounted for by this PHP/Java bridge.

izanzawawi

thanks for reply and suggestion. I'm try first.