Java is one of the powerful language.And we can do so mang things with it .
If you want to integrate javascript code with your javacode then it is very simple.
the steps are
1. Create ScriptEngineManager object
2.Get the ScriptEngine object from scriptEngineManager
3.Evaluate a script using the ScriptEngine object.
Here is the sample code :
You need to include "javax.script" package.
The scripting API consists of interfaces and classes that define Java Scripting Engines and provides a
framework for their use in Java applications.
import javax.script.*;
public class Javascript {
public static void main(String[] args) {
// Creating ScriptEngineManager
ScriptEngineManager mgr = new ScriptEngineManager();
//getting the ScriptEngine object
ScriptEngine jsEngine = mgr.getEngineByName("JavaScript");
try {
//Evaluate the script.For this we are using eval method
jsEngine.eval("print('Hello, world!')");
} catch (ScriptException ex) {
ex.printStackTrace();
}
try {
//We can import even java pacjages from script
jsEngine.eval("importPackage(javax.swing);" +
"var optionPane = " +
" JOptionPane.showMessageDialog(null, 'Hello, world!');");
} catch (ScriptException ex) {
ex.printStackTrace();
}
}
}
