//ÊÊÅäÆ÷ģʽ
class class1 {
    function trace1() {
        trace("1");
    }
}
class class2 {
    function trace2() {
        trace("2");
    }
}

class adater extends class1 {
    var adat:class2;
    function adater() {
        adat = new class2();
    }
    function trace2() {
        adat.trace2();
    }
}
var t = new adater();
t.trace2();