External Interfaces/API Reference

javaMethod

Invokes a Java method

Syntax

• X = javaMethod('method_name','class_name',x1,...,xn)
  X = javaMethod('method_name',J,x1,...,xn)
  

Description

javaMethod('method_name','class_name',x1,...,xn) invokes the static method method_name in the class class_name, with the argument list that matches x1,...,xn.

javaMethod('method_name',J,x1,...,xn) invokes the nonstatic method method_name on the object J, with the argument list that matches x1,...,xn.

Remarks

Using the javaMethod function enables you to

• Use methods having names longer than 31 characters
• Specify the method you want to invoke at run-time, for example, as input from an application user

The javaMethod function enables you to use methods having names longer than 31 characters. This is the only way you can invoke such a method in MATLAB. For example:

• javaMethod('DataDefinitionAndDataManipulationTransactions', T);
  

With javaMethod, you can also specify the method to be invoked at run-time. In this situation, your code calls javaMethod with a string variable in place of the method name argument. When you use javaMethod to invoke a static method, you can also use a string variable in place of the class name argument.

Note    Typically, you do not need to use javaMethod. The default MATLAB syntax for invoking a Java method is somewhat simpler and is preferable for most applications. Use javaMethod primarily for the two cases described above.

Examples

To invoke the static Java method isNaN on class, java.lang.Double, use

• javaMethod('isNaN','java.lang.Double',2.2)
  

The following example invokes the nonstatic method setTitle, where frameObj is a java.awt.Frame object.

• frameObj = java.awt.Frame;
  javaMethod('setTitle', frameObj, 'New Title');
  

See Also
javaArray, javaObject, import, methods, isjava

javachk

javaObject