SimpleScriptContext setAttribute() method in Java with Examples

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The setAttribute() method of a SimpleScriptContext class is used to set the value of an attribute in a given scope where the name of the attribute, the value of attribute and scope of the attribute is passed as parameters. If the scope is GLOBAL_SCOPE and there are no Bindings is set for GLOBAL_SCOPE, then setAttribute call is a no-op.

Syntax:

public void setAttribute(String name,
       Object value, int scope)

Parameters: This method accepts three-parameters:

name which is the Name of the attribute to set,
value which is the value of the attribute and
scope which is the scope in which to set the attribute.

Return value: This method returns nothing.

Exceptions: This method throws following Exceptions:

NullPointerException: if the name is null.
IllegalArgumentException: if the name is empty or if the scope is invalid.

Below programs illustrate the SimpleScriptContext.setAttribute() method:
Program 1:

// Java program to demonstrate
// SimpleScriptContext.setAttribute() method
  
import javax.script.ScriptContext;
import javax.script.SimpleScriptContext;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create SimpleScriptContext object
        SimpleScriptContext simple
            = new SimpleScriptContext();
  
        // add some attribute using setAttribute()
        simple.setAttribute(
            "name1", "Value1",
            ScriptContext.ENGINE_SCOPE);
  
        // print
        System.out.println("name1:"
                           + simple.getAttribute("name1"));
    }
}

Output:

name1:Value1

Program 2:

// Java program to demonstrate
// SimpleScriptContext.setAttribute() method
  
import javax.script.ScriptContext;
import javax.script.SimpleScriptContext;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create SimpleScriptContext object
        SimpleScriptContext simple
            = new SimpleScriptContext();
  
        // add some attribute using setAttribute()
        simple.setAttribute("Team1", "India",
                            ScriptContext.ENGINE_SCOPE);
        simple.setAttribute("Team2", "Japan",
                            ScriptContext.ENGINE_SCOPE);
        simple.setAttribute("Team3", "Nepal",
                            ScriptContext.ENGINE_SCOPE);
  
        // print
        System.out.println("Team1:"
                           + simple.getAttribute("Team1"));
        System.out.println("Team2:"
                           + simple.getAttribute("Team2"));
        System.out.println("Team3:"
                           + simple.getAttribute("Team3"));
    }
}