assign_value[为枚举常量指定值] end[结束] start --> define_enum define_enum --> assign_value assign_value --> end 代码示例 下面是一个使用枚举类指定值的示例程序: publicclassMain{publicstaticvoidmain(String[]args){for(Weekdayday:Weekday.values()){System.out.println(day+" : "+day.getVal...
// 枚举类型定义publicenumStatus{SUCCESS,FAILURE,PENDING}// 为枚举类型赋值publicvoidassignValueToEnum(){// 调用服务层方法,为枚举类型赋值EnumService.assignValue(Status.SUCCESS,"value1");EnumService.assignValue(Status.FAILURE,100);EnumService.assignValue(Status.PENDING,true);}// 从枚举类型获取值public...
In Java, you can assign values to enums by defining a constructor and a private variable in the enum. For example an enum for Seasons of the year will have 4 constants:public enum Season {WINTER, SPRING, SUMMER, FALL}. This allows you to associate specific values with each enum constant...
The syntax to create anenumwith multiple values is very similar to the syntax ofenumwith a single value assigned to it. we should do the following steps to have anenum with different values: Createenum constructorwhich accepts multiple values Assigneach constructor argument to a member fieldin t...
AtomicInteger使用value来保存值,value是volatile的,保证了可见性。 对于get方法直接返回value,对于自增一或者添加值使用了CAS自旋锁,使用了一个死循环,如果cas返回为true就可以退出循环。对于CAS 全称是compare and swap比较和交换,CAS需要三个操作数,一个是变量内存地址,一个是excepted过期值,一个是现在要更新的值,...
Enums implement java.io.Serializableso they can be serialized, but the Java serialization mechanism handles them specially to ensure that no new instances are ever created. Instances of an enumerated type are immutable: each enum value retains its identity. (We'll see later in this chapter that...
您已经知道,Java 代码的两个基本的构造块是类 和接口。现在 Tiger 又引入了枚举,一般简称它为 enum。这个新类型允许您表示特定的数据点,这些数据点只接受分配时预先定义的值集合。 当然,熟练的程序员可以用静态常量实现这项功能,如清单 1 所示: 清单1. public static final 的常量 ...
enumPhaseTraceId{_t_parser ,// 1. 字节码解析与理想图生成_t_optimizer ,// 2. 机器无关优化..._t_matcher ,// 3. 指令选择_t_scheduler ,// 4. 指令调度和全局代码提出_t_registerAllocation ,// 5. 寄存器分配..._t_blockOrdering
enum Season { SPRING(10), SUMMER(20), AUTUMN(30), WINTER(40); private int value; Season(int value) { this.value = value; } public int getValue() { return value; } } void main() { for (Season season : Season.values()) { ...
TreeMaker.Assign用于创建赋值语句语法树节点(JCAssign),源码如下: lhs:赋值语句左边表达式 rhs:赋值语句右边表达式 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public JCAssign Assign(JCExpression lhs, JCExpression rhs) { JCAssign tree = new JCAssign(lhs, rhs); tree.pos = pos; return tree; ...