valueOf() 方法用于将基本数据类型转换为对应的包装对象,即返回指定参数的原始数值对象,实现从值类型到引用类型的转换,具体使用方式如下所示。 1、 启动IDEA编辑器,界面所示。 2、 所示,通过引用类型的valueOf方法将基本数据类型转换为引用类型。
Most Java developers have probably had their fill of NullPointerException. Most of us have learned the value of doing certain things to reduce our “ opportunities ” of encountering the ...