%THIS（返回本机方法的类实例）

在线编辑

%THIS

%THIS 返回一个对象值，该对象值包含对以其名义调用本机方法的类实例的引用。 %THIS 仅在非静态本机方法中有效。此内置函数为非静态本机方法提供对类实例的访问权。

非静态本机方法在其类的特定实例上工作。此对象实际上由 Java™作为参数传递到本机方法，但它不会显示在本机方法的原型或过程接口中。在 Java 方法中，对象实例由 Java 保留字 this引用。在 RPG 本机方法中，对象实例由 %THIS 内置函数引用。

图 1。 %THIS 示例

 * Method "vacationDays" is a method in the class 'Employee'
D vacationDays    PR            10I 0 EXTPROC(*JAVA
D                                           : 'Employee'
D                                           : 'vacationDays')

 * Method "getId" is another method in the class 'Employee'
D getId           PR            10I 0 EXTPROC(*JAVA
D                                           : 'Employee'
D                                           : 'getId')
...
 * "vacationDays" is an RPG native method.  Since the STATIC keyword
 * is not used, it is an instance method.
P vacationDays    B                   EXPORT
D vacationDays    PI            10I 0

D id_num          S             10I 0

 * Another Employee method must be called to get the Employee's
 * id-number.  This method requires an Object of class Employee.
 * We use %THIS as the Object parameter, to get the id-number for
 * the object that our native method "vacationDays" is working on.
C                   eval      id_num = getId(%THIS)
C     id_num        chain     EMPFILE
C                   if        %found
C                   return    VACDAYS
C                   else
C                   return    -1
C                   endif

P vacationDays    E