JavaGetString Function

Action

Retrieves the string return value of the last call of JavaCallMethod on the specified object or class.

Include file

Java.bdh

Syntax

JavaGetString( in  hObject : number,
               out sBuffer : string,
               in  nBufLen : number optional );

Parameter	Description
hObject	Valid handle to a java object or `JAVA_STATIC_METHOD`.
sBuffer	String buffer that will receive the return value of the last call of `JavaCallMethod`.
nBufLen	Length of the buffer (optional).

Example

dcltrans
  transaction TInit
  begin
        // Load and start the JVM.
        JavaCreateJavaVM();

  end TInit;

  transaction TPureBdl
  var hJTable    : number;
      hJKeyStr   : number;
      hJValueStr : number;
      hJRetVal   : number;
      sBuffer    : string;
  begin
   // prepare the key/value pair
    // String jKeyStr = "hello";
    // String jValueStr = "world";
    hJKeyStr := JavaLoadString("hello");
    hJValueStr := JavaLoadString("world");

    // instantiate a Hashtable
    // Hashtable jTable = new Hashtable();
    hJTable := JavaLoadObject("java/util/Hashtable");

    // insert an Object into the Hashtable
    // jTable.put(jKeyStr, jValueStr);
    JavaCastObject(hJKeyStr, "java/lang/Object");
    JavaSetObject(hJTable, hJKeyStr);
    JavaSetObject(hJTable, hJValueStr, "java/lang/Object");
    JavaCallMethod(hJTable, "put");

    // retrieve an Object from the Hashtable
    // Object jRetVal = jTable.get(jKeyStr);
    JavaSetObject(hJTable, hJKeyStr);
    JavaCallMethod(hJTable, "get");
    hJRetVal := JavaGetObject(hJTable);

    // retrieve print out the java string object
    // System.out.println("Found value \""+jRetVal+"\" in Hashtable.");
    JavaCallMethod(hJRetVal, "toString");
    JavaGetString(hJRetVal, sBuffer);
    Print("Found value \""+sBuffer+"\" in Hashtable.");

    // Free all objects
    JavaFreeObject(hJTable);
    JavaFreeObject(hJKeyStr);
    JavaFreeObject(hJValueStr);
    JavaFreeObject(hJRetVal);
  end TPureBdl;

  transaction TEnd
  begin 
  end TEnd;

Sample scripts

JavaFrameworkBankSample.bdf

BankSample.java, Account.java, Customer.java, PremiumCustomer.java