// Java program to demonstrate // Optional.orElseThrow() method import java.util.*; import java.util.function.*; public class GFG { public static void main(String[] args) { // create a Optional Optional<Integer>
示例1: // Java program to demonstrate// OptionalInt.orElseThrow() methodimportjava.util.OptionalInt;publicclassGFG{publicstaticvoidmain(String[] args){// create a OptionalIntOptionalInt opInt = OptionalInt.of(12345);// get value usingorElseThrow()System.out.println("int Value extracted using...
程序1: // Java program to demonstrate// Optional.orElseThrow() methodimportjava.util.*;importjava.util.function.*;publicclassGFG{publicstaticvoidmain(String[] args){// create a OptionalOptional<Integer> op = Optional.of(9455);// print supplierSystem.out.println("Optional: "+ op);//orElse...
示例2: // Java program to demonstrate// OptionalInt.orElseThrow(Supplier) methodimportjava.io.IOException;importjava.util.OptionalInt;publicclassGFG{publicstaticvoidmain(String[] args){// create a OptionalIntOptionalInt opint = OptionalInt.empty();// applyorElseThrow(Supplier)intvalue;try{ value...