java-7

问题 When I use java 7 to compile a code using PriorityQueue with Comparator, compiler sends error: cannot infer type arguments for Comparator<T>; Comparator<Map.Entry<Double, PureColor>> colorComparator = new Comparator<>() { ^ reason: cannot use '<>' with anonymous inner classes Why this, and how can I compile me code: Comparator<Map.Entry<Double, PureColor>> colorComparator = new Comparator<Map.Entry<Double, PureColor>>() { @Override public int compare(Map.Entry<Double, PureColor> o1, Map.Entry

问题 By using JavaScript APIs in Java 7, I am able to compile and invoke JavaScript functions. The issue is with value returned by the JavaScript function. Simple types can be type-cast easily. However, if a JavaScript function returns an object. How to convert the returned object into json string? ScriptEngineManager mgr = new ScriptEngineManager(); ScriptEngine se = mgr.getEngineByName("JavaScript"); if (se instanceof Compilable) { Compilable compiler = (Compilable) se; CompiledScript script =

问题 I have the task to create the spring-boot application using Java 7. So, as usual, I created a template on start.spring.io resource and open him via File -> New -> Project from Existing Sources... When I run with jdk-8 , everything works fine, but when I change JDK to version 1.7 (also I change java-version in pom.xml ) I get a compilation error: Error:java: invalid flag: -parameters Screenshot: Pom.xml: <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0"

问题 This question already has answers here : Missing artifact com.sun:tools:jar (24 answers) Closed 2 years ago . Here is my pom.xml <project ... > <modelVersion>4.0.0</modelVersion> <groupId>io.fabric8</groupId> <artifactId>kubernetes-alexa</artifactId> <version>1.0-SNAPSHOT</version> <packaging>jar</packaging> <properties> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <!-- lambda --> <lambda.functionCode>${project.build.directory}/$

问题 This new Java 7 try-with-resources construct is quite nice. Or at least, it was nice until an exception came along and ruined my day. I've finally managed to boil it down to a reproducible test which uses nothing but JUnit+jMock. @Test public void testAddSuppressedIssue() throws Exception { Mockery mockery = new Mockery(); final Dependency dependency = mockery.mock(Dependency.class); mockery.checking(new Expectations() {{ allowing(dependency).expectedCall(); allowing(dependency).close(); }});

问题 After trying other solutions from HttpURLConnection Invalid HTTP method: PATCH I am writing my problem here. I am getting Invalid HTTP Method :PATCH Exception with JAVA 7. Updating JAVA is not in option so i have to stick to the Workarounds. I am using Invocation to invoke the request like this Invocation invoke = reqBuilder.build(getHTTPVerb(), Entity.entity(requestJSON, MediaType.APPLICATION_JSON)); getWebTarget().request(MediaType.APPLICATION_JSON).header("Authorization", getAuthorization(

问题 I'm trying to sort a list with the following rules: Known values should be ordered before unknown values. Known values should be ordered by a separately defined key. Unknown values should be ordered by their natural ordering. I've got (1) and (2), just struggling with adding (3) in to the mix. So far I have this: List<String> values = Arrays.asList( "red", "orange", "yellow", "green", "blue", "indigo", "violet"); ImmutableMap<String, Integer> map = ImmutableMap.of("red", 1, "green", 2, "blue"

问题 all of the variables above have the warning in the title. Could you please tell me why that is happening? public class DataTypes { public static void main(String[] argv) { // new feature in JDK 7 int x = 0b1010; // 12 int y = 0b1010_1010; int ssn = 444_12_7691; long phone = 408_777_6666L; double num = 9_632_401_909.1_0_3; String twoLine = "line one\nline two"; } } 回答1: The variables you declared are never used, only assigned to, therefore you're being warned. 回答2: You have defined the

问题 all of the variables above have the warning in the title. Could you please tell me why that is happening? public class DataTypes { public static void main(String[] argv) { // new feature in JDK 7 int x = 0b1010; // 12 int y = 0b1010_1010; int ssn = 444_12_7691; long phone = 408_777_6666L; double num = 9_632_401_909.1_0_3; String twoLine = "line one\nline two"; } } 回答1: The variables you declared are never used, only assigned to, therefore you're being warned. 回答2: You have defined the

问题 How do I run a JMeter test case from Java code? I have followed the example Here from Blazemeter.com My code is as follows: public class BasicSampler { public static void main(String[] argv) throws Exception { // JMeter Engine StandardJMeterEngine jmeter = new StandardJMeterEngine(); // Initialize Properties, logging, locale, etc. JMeterUtils.loadJMeterProperties("/home/stone/Workbench/automated-testing/apache-jmeter-2.11/bin/jmeter.properties"); JMeterUtils.setJMeterHome("/home/stone