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📜  检查对象是否为空 java 8 - Java 代码示例

📅  最后修改于: 2022-03-11 14:52:46.293000             🧑  作者: Mango

代码示例2
// Changed EmployeeServive to return an optional, no more nulls!
Optional employee = employeeServive.getEmployee();
employee.ifPresent(e -> System.out.println(e.getId()));