从long类型到float、double类型。对应的指令为:l2f、l2d 从float类型到double类型。对应的指令为:f2d 简化为:int-->long-->float-->double 宽化类型转换是不会因为超过目标类型最大值而丢失信息的,例如,从int转换到long,或者从int转换到double,都不会丢失任何信息,转换前后的值是精确相等的。从int、long类型数值...
从float类型到double类型。对应的指令为:f2d 简化为:int 一> long 一> float 一> double 精度损失问题: 宽化类型转换是不会因为超过目标类型最大值而丢失信息的,例如,从int转换到long,或者从int转换到 double,都不会丢失任何信息,转换前后的值是精确相等的。 但从int、long转换到 float类型数值时,或者long转换...
BiConsumer:void accept(T t, U u);接受两个参数 DoubleConsumer:void accept(double value);接受一个double参数 IntConsumer:void accept(int value);接受一个int参数 LongConsumer:void accept(long value);接受一个long参数 ObjDoubleConsumer:void accept(T t, double value);接受一个泛型参数一个double参数 O...
JVM:全称 Java Virtual Machine,一个虚拟计算机,Java 程序的运行环境(Java二进制字节码的运行环境) 特点: Java 虚拟机基于二进制字节码执行,由一套字节码指令集、一组寄存器、一个栈、一个垃圾回收堆、一个方法区等组成 JVM 屏蔽了与操作系统平台相关的信息,从而能够让 Java 程序只需要生成能够在 JVM 上运行的字...
test(t); } /** * Returns a predicate that represents the logical negation of this * predicate. * * @return a predicate that represents the logical negation of this * predicate */ default Predicate<T> negate() { return (t) -> !test(t); } /** * Returns a composed predicate that ...
The example checks if there is any empty string in the list. Negating predicates Thenegatemethod returns a predicate that represents the logical negation of the given predicate. Main.java import java.util.Arrays; import java.util.function.IntPredicate; ...
* If the argument is negative, the negation of the argument is returned. * * Note thatifthe argument is equal to the value of * {@link Integer#MIN_VALUE}, the most negative representable* {@codeint} value, the result is that same value, which is * negative...
BigDecimal(Double, MathContext) Übersetzt eine double in eine BigDecimal, mit Rundung gemäß den Kontexteinstellungen. BigDecimal(Int32) Übersetzt eine int in ein BigDecimal. BigDecimal(Int32, MathContext) Übersetzt eine int in eine BigDecimal, mit Rundung gemäß den Kontext...
BigDecimal(char[] in, MathContext mc) Translates a character array representation of a BigDecimal into a BigDecimal, accepting the same sequence of characters as the BigDecimal(java.lang.String) constructor and with rounding according to the context settings. BigDecimal(double val) Translates...
++ (Postfix increment), -- (postfix decrement) !, ∼, + (Unary plus), - (Unary negation), ++ (Prefix increment), -- (Prefix decrement), typeof, void, delete *, /, % + (Addition), - (Subtraction) << , >>, >>> <, <=, >, >=, in, instanceof ==, !=, ===, !==...