我们可以将不等式运算符号定义为枚举类的常量。 publicenumInequalityOperator{LESS_THAN("<"),LESS_THAN_OR_EQUAL_TO("<="),GREATER_THAN(">"),GREATER_THAN_OR_EQUAL_TO(">="),NOT_EQUAL_TO("!=");privatefinalStringsymbol;InequalityOperator(Stringsymbol){this.symbol=symbol;}publicStringgetSymbol(){...
public abstract class Enum<E extends Enum<E>> implements Comparable<E>, Serializable { /** * The name of this enum constant, as declared in the enum declaration. * Most programmers should use the {@link #toString} method rather than * accessing this field. */ private final String name; ...
equal to, or greater than the specified object. * * Enum constants are only comparable to ot...
Returns a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object. Enum constants are only comparable to other enum constants of the same enum type. The natural order implemented by this method is the order in which the ...
out.println("Number is greater than 5"); } } } 如果number 大于5,则输出 "Number is greater than 5"。1.2.2 if-else语句 if-else 语句用于在条件为真时执行一段代码,否则执行另一段代码。 public class IfElseExample { public static void main(String[] args) { int number = 3; if (number ...
The constructor EnumDemo.Color(String, int) is undefined 到此,你就可以明白,枚举和普通类基本一致(但是不完全一样)。 对于类来讲,最好将其成员变量私有化,然后,为成员变量提供 get、set 方法。 按照这个原则,可以进一步写好 enum Color. public enum Color { ...
import com.github.f4b6a3.uuid.enums.UuidVersion; import com.github.f4b6a3.uuid.impl.TimeBasedUuidCreator; import java.time.Instant; public class UUIDGenerator { public static void main(String[] args) { UuidCreator creator = TimeBasedUuidCreator.withRandomNodeId(); ...
Enum shardingOperator, boolean withEntity) { LocalDateTime createTime = (LocalDateTime) shardingValue; String dataSource = "ds" + createTime.getYear(); switch (shardingOperator){ case GREATER_THAN: case GREATER_THAN_OR_EQUAL: return ds-> dataSource.compareToIgnoreCase(ds)<=0; case LESS_THAN:...
classMetaspace:publicAllStatic {friendclassMetaspaceShared;public:enumMetadataType { ClassType, NonClassType, MetadataTypeCount };enumMetaspaceType { ZeroMetaspaceType =0, StandardMetaspaceType = ZeroMetaspaceType, BootMetaspaceType = StandardMetaspaceType +1, ...
Compares this enum with the specified object for order. Returns a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object. Enum constants are only comparable to other enum constants of the same enum type. The natural order ...