//instanceof关键字用于判断一个引用类型变量所指向的对象是否是一个类(或接口、抽象类、父类)的实例 if(new Date() instanceof Date) { System.out.println("yes1"); } if(new Date() instanceof Comparable) { System.out.println("yes2"); } if(new SimpleDateFormat() instanceof DateFormat) { System.out.println("yes3"); } String [] arr = {"34","23","12"}; if(arr instanceof String []) { System.out.println("yes4"); } //结果 yes1 yes2 yes3 yes4
instanceof关键字用法
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