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POProgramming Java 7 in Eclipse
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2638622
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ClosedDate
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2010-04-14T15:18:11.543
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2012-07-22T20:37:45.457
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2010-04-14T15:36:39.180
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Score
50
ViewCount
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LastEditorDisplayName
text
Body
I installed <a href="http://java.sun.com/javase/downloads/ea.jsp" rel="noreferrer">JDK 7</a> and <a href="http://download.eclipse.org/eclipse/downloads/drops/S-3.6M6-201003121448/index.php" rel="noreferrer">Eclipse 3.6M6</a>. Then, I added JRE 7 as a new JRE execution environment in Eclipse, and set the compiler compliance level to Java 7. I can compile the following piece of code through command line using the <code>javac</code> that comes with JDK 7. <pre><code>import java.util.HashMap; import java.util.Map; public class Try { public static void main(String[] args) { Map<Integer, String> map = new HashMap<>(); } } </code></pre> But, Eclipse gives the following error messages. <blockquote> Incorrect number of arguments for type HashMap; it cannot be parameterized with arguments Try.java /TryJava7/src line 7 Java Problem Syntax error on token "<", ? expected after this token Try.java /TryJava7/src line 7 Java Problem </blockquote> Even though I've set the compliance level of the compiler to Java 7, it looks like Eclipse doesn't understand Java7 syntax yet. Is it possible to play with Java 7 in Eclipse? The following is the content of <code>.classpath</code>. <pre><code><?xml version="1.0" encoding="UTF-8"?> <classpath> <classpathentry kind="src" path="src"/> <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/> <classpathentry kind="output" path="bin"/> </classpath> </code></pre> And, the following is the content of <code>.settings/org.eclipse.jdt.core.prefs</code>. <pre><code>eclipse.preferences.version=1 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7 org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve org.eclipse.jdt.core.compiler.compliance=1.7 org.eclipse.jdt.core.compiler.debug.lineNumber=generate org.eclipse.jdt.core.compiler.debug.localVariable=generate org.eclipse.jdt.core.compiler.debug.sourceFile=generate org.eclipse.jdt.core.compiler.problem.assertIdentifier=error org.eclipse.jdt.core.compiler.problem.enumIdentifier=error org.eclipse.jdt.core.compiler.source=1.7 </code></pre>
Tags
<java><eclipse><java-7>
Title
Programming Java 7 in Eclipse
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