@Test
public void testPredict() {
????????Predicate predicate = (t) -> t>0;
????????System.out.println(predicate.test(1));
????????System.out.println(predicate.negate().test(1));
????????Predicate predicate2 = Predicate.isEqual(1);
????????System.out.println(predicate2.test(2));
????????System.out.println(predicate.or(predicate2).test(2));
}
@Test
public void testConsumer() {
????????Consumer consumer=new Consumer() {
????????????????@Override
? ? ????????????? public void accept(String t) {
????????????????????????????System.out.println(t);
????????????????}
????????};
????????Consumer after=(String s)-> System.out.println(s+"? "? +1);
????????consumer.accept("100");
????????consumer.accept("asd");
????????consumer.andThen(after).accept("11");;
}
@Test
public void testSupply () {
????????????????Supplier supplier =new Supplier() {
????????????????????????????????@Override
? ? ????????????????????????? public Integer get() {
????????????????????????????????????????return 1;
????????????????????????????????}
????????????????};????????????
????????????????Supplier supplier1=()->1+3;
????????????????System.out.println(supplier.get());
????????????????System.out.println(supplier1.get());
????????}
@Test
public void testFunction() {
????????????Function function1 =new Function() {
????????????????????????@Override
? ? ????????????????????? public String apply(Integer t) {
????????????????????????????????return String.valueOf(t);
????????????????????????????}
????????????????????????};
????????????Function function2=(Integer t)->String.valueOf(t+2);
????????????System.out.println(function1.apply(12));
????????????System.out.println(function2.apply(1));
????????????System.out.println(Function.identity().apply("1"));
????}
