java-8

问题 I have a class A Company { String name; Logo logo; } Logo { int color; //can have values=1 (green),2 (red),3 (blue) ... String name; String address; } Output needed : for each type 1,2,3 Group all instances of Logo by color. For each such group what were A.id Give me companies by their color logos. E.g. which companies have logo red? I tried following Input List<Company> company = {//initialization} company.stream().map(e -> e.getLogo()) .collect(Collectors.groupingBy(e -> {Logo b = new Logo(

问题 This question already has answers here : Can’t rid of 'T' in LocalDateTime (3 answers) Closed 4 months ago . I have this fragment of code to bidirectional parsing String to LocalDateTime: public class ConvertLocalDateToString { private static final DateTimeFormatter CUSTOM_LOCAL_DATE; static { CUSTOM_LOCAL_DATE = new DateTimeFormatterBuilder() .appendValue(YEAR, 4, 10, SignStyle.EXCEEDS_PAD) .appendLiteral('-') .appendValue(MONTH_OF_YEAR, 2) .appendLiteral('-') .appendValue(DAY_OF_MONTH, 2)

问题 This question already has answers here : Can’t rid of 'T' in LocalDateTime (3 answers) Closed 4 months ago . I have this fragment of code to bidirectional parsing String to LocalDateTime: public class ConvertLocalDateToString { private static final DateTimeFormatter CUSTOM_LOCAL_DATE; static { CUSTOM_LOCAL_DATE = new DateTimeFormatterBuilder() .appendValue(YEAR, 4, 10, SignStyle.EXCEEDS_PAD) .appendLiteral('-') .appendValue(MONTH_OF_YEAR, 2) .appendLiteral('-') .appendValue(DAY_OF_MONTH, 2)

问题 I'm totally new to Mockito and I need to mock a post request so that I can test a client alone. However, no matter what I do I get the RESTEASY004655: Unable to invoke request exception. This is the simplified version of what I have so far. I have the class TestClassA which sends a post request to an api as follows: import java.io.IOException; import java.util.HashMap; import java.util.Map; import java.util.concurrent.TimeUnit; import javax.ws.rs.client.Entity; import javax.ws.rs.core

问题 I'm totally new to Mockito and I need to mock a post request so that I can test a client alone. However, no matter what I do I get the RESTEASY004655: Unable to invoke request exception. This is the simplified version of what I have so far. I have the class TestClassA which sends a post request to an api as follows: import java.io.IOException; import java.util.HashMap; import java.util.Map; import java.util.concurrent.TimeUnit; import javax.ws.rs.client.Entity; import javax.ws.rs.core

问题 I am trying to read a YAML file in Java using the following code: public class LoadFile { public static void main(String[] args) throws IOException { Yaml yaml = new Yaml(); InputStream inputStream = LoadFile.class .getClassLoader() .getResourceAsStream("ABSOLUTE PATH TO YAML"); Object obj = yaml.load(inputStream); System.out.println(obj); } } But I get this exception which I don't understand why it occurs. Exception in thread "main" org.yaml.snakeyaml.error.YAMLException: java.io.IOException

问题 We have recently upgraded our Java version to JDK 1.8.0_141 which is forcing our java client to use TLS 1.2 and we have a .Net 2.0 web service running on a Windows Server 2008 SP2 which supports only SSL V3 and TLS 1.0 OS Name: Microsoft Windows Server 2008 Standard OS Version: 6.0.6002 Service Pack 2 Build 6002 So I've applied the patch (Update for Windows Server 2008 (KB4019276)) from below KB to enable TLS 1.1 and TLS 1.2 https://support.microsoft.com/en-us/help/4019276/update-to-add

问题 We have recently upgraded our Java version to JDK 1.8.0_141 which is forcing our java client to use TLS 1.2 and we have a .Net 2.0 web service running on a Windows Server 2008 SP2 which supports only SSL V3 and TLS 1.0 OS Name: Microsoft Windows Server 2008 Standard OS Version: 6.0.6002 Service Pack 2 Build 6002 So I've applied the patch (Update for Windows Server 2008 (KB4019276)) from below KB to enable TLS 1.1 and TLS 1.2 https://support.microsoft.com/en-us/help/4019276/update-to-add

问题 I want to do a string list filter function using an Iterable<String> and a predicate to select the strings to keep, the other ones must be removed from the list, but I'm not understating how I do the remove. static <T> Iterable<T> select(Iterable<T> it, Predicate<T> pred) { for (T s: it) { if (pred.test(s)==false) { // what to do here? } } return ...; } For this input: {"a","","b",""} I expect {"a","b"} 回答1: An Iterable represents the capability to provide an Iterator on request. So, to

问题 I want to do a string list filter function using an Iterable<String> and a predicate to select the strings to keep, the other ones must be removed from the list, but I'm not understating how I do the remove. static <T> Iterable<T> select(Iterable<T> it, Predicate<T> pred) { for (T s: it) { if (pred.test(s)==false) { // what to do here? } } return ...; } For this input: {"a","","b",""} I expect {"a","b"} 回答1: An Iterable represents the capability to provide an Iterator on request. So, to