fun main() {
    println("测试:" + Test.CHANG_LIANG)
    println("测试2:" + Test.JING_TAI)
    Test.JING_TAI = "静态被修改"
    println("测试3:" + Test.JING_TAI)
}

class Test{
    companion object{
        public const val CHANG_LIANG:String = "常量"
        public var JING_TAI:String = "静太"
    }
}

输出:

测试1:常量
测试2:静太
测试3:静态被修改

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