Add PackageClassLister

Author: davidharcombe

junit/src/test/java/com/gramercysoftware/utils/PackageClassListerTest.java

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+package com.gramercysoftware.utils;
+
+import java.util.List;
+
+import junit.framework.TestCase;
+
+public class PackageClassListerTest extends TestCase {
+
+	public void testDirectory() {
+		List<Class<?>> classes = PackageClassLister.getClasses("com.gramercysoftware.utils.pcltest");
+		assertNotNull(classes);
+		assertEquals(4, classes.size());
+	}
+	
+	public void testDirectoryWithPattern() {
+		List<Class<?>> classes = PackageClassLister.getClasses("com.gramercysoftware.utils.pcltest", ".*Class");
+		assertNotNull(classes);
+		assertEquals(3, classes.size());
+	}
+}

junit/src/test/java/com/gramercysoftware/utils/pcltest/Blue.java

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+package com.gramercysoftware.utils.pcltest;
+
+public class Blue {
+
+}

junit/src/test/java/com/gramercysoftware/utils/pcltest/OneClass.java

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+package com.gramercysoftware.utils.pcltest;
+
+public class OneClass {
+
+}

junit/src/test/java/com/gramercysoftware/utils/pcltest/RedClass.java

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+package com.gramercysoftware.utils.pcltest;
+
+public class RedClass {
+
+}

junit/src/test/java/com/gramercysoftware/utils/pcltest/TwoClass.java

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+package com.gramercysoftware.utils.pcltest;
+
+public class TwoClass {
+
+}