updated

amir1422 · amir1422 · commit 7f5a8b3e05ef · 2022-05-15T23:38:58.000+05:30
diff --git a/.classpath b/.classpath
@@ -8,9 +8,9 @@
 	</classpathentry>
 	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
 		<attributes>
+			<attribute name="test" value="true"/>
 			<attribute name="optional" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
-			<attribute name="test" value="true"/>
 		</attributes>
 	</classpathentry>
 	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
@@ -23,6 +23,5 @@
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/3"/>
 	<classpathentry kind="output" path="target/classes"/>
 </classpath>
diff --git a/.settings/org.eclipse.jdt.core.prefs b/.settings/org.eclipse.jdt.core.prefs
@@ -8,7 +8,9 @@ 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.enablePreviewFeatures=disabled
 org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
 org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore
 org.eclipse.jdt.core.compiler.release=disabled
 org.eclipse.jdt.core.compiler.source=1.8
diff --git a/pom.xml b/pom.xml
@@ -16,11 +16,11 @@
 
   <dependencies>
     <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <version>3.8.1</version>
-      <scope>test</scope>
-    </dependency>
+    <groupId>org.junit.jupiter</groupId>
+    <artifactId>junit-jupiter-engine</artifactId>
+    <version>5.8.1</version>
+    <scope>test</scope>
+</dependency>
   </dependencies>
   <build>
     <plugins>
diff --git a/src/main/java/com/amir/api/StreamApi.java b/src/main/java/com/amir/api/StreamApi.java
@@ -1,7 +1,6 @@
 package com.amir.api;
 
 import java.util.Arrays;
-import java.util.Comparator;
 import java.util.List;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
diff --git a/src/main/java/com/amir/api/time/Date2TimeDemo.java b/src/main/java/com/amir/api/time/Date2TimeDemo.java
@@ -1,15 +1,9 @@
 package com.amir.api.time;
 
-import java.time.Instant;
 import java.time.LocalDate;
 import java.time.ZoneId;
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
-import java.time.format.DateTimeFormatterBuilder;
-import java.time.temporal.TemporalAccessor;
-import java.util.Calendar;
-import java.util.Date;
-import java.util.GregorianCalendar;
 import java.util.TimeZone;
 
 public class Date2TimeDemo {
diff --git a/src/test/java/com/amir/AppTest.java b/src/test/java/com/amir/AppTest.java
@@ -1,38 +1,24 @@
 package com.amir;
 
-import junit.framework.Test;
-import junit.framework.TestCase;
-import junit.framework.TestSuite;
-
 /**
  * Unit test for simple App.
  */
-public class AppTest 
-    extends TestCase
-{
-    /**
-     * Create the test case
-     *
-     * @param testName name of the test case
-     */
-    public AppTest( String testName )
-    {
-        super( testName );
-    }
-
-    /**
-     * @return the suite of tests being tested
-     */
-    public static Test suite()
-    {
-        return new TestSuite( AppTest.class );
-    }
+public class AppTest {
+	
+	
+	public static void main(String[] args) {
+			
+	}
 
-    /**
-     * Rigourous Test :-)
-     */
-    public void testApp()
-    {
-        assertTrue( true );
-    }
+	static{
+		
+System.out.println("amir");
+		
+		int i=1001;
+		
+		assert i>=10000;
+		
+		System.out.println("finished");
+	
+	}
 }
diff --git a/src/test/java/com/amir/wrapper/IntegerCP.java b/src/test/java/com/amir/wrapper/IntegerCP.java
@@ -0,0 +1,9 @@
+package com.amir.wrapper;
+
+
+
+public class IntegerCP {
+
+	
+	
+}
diff --git a/src/test/java/com/amir/wrapper/WrapperDemoTest.java b/src/test/java/com/amir/wrapper/WrapperDemoTest.java
@@ -0,0 +1,71 @@
+package com.amir.wrapper;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.Test;
+
+/*
+ * Integer constant pool depends on literals assignment (autoboxing,valueOf(int) method)
+ * if you see this method you will find that there is cache machenism for few numbers
+ * IntegerCache class does cached Integer object from [-128 to 127] using static block,and high-value[127] can be configurable
+ * means you can configure any high value instead of 127 using -Djava.lang.Integer.IntegerCache.high=<size>
+ * java.lang.Integer.IntegerCache.high default value is null;
+ * for Character cached working for range of (0,127)
+ * 
+ * there 8 Wrapper classes(4 number+2decimal+1boolean+1char) --Except decimal(float & double) ..caching are working for all 6 wrapper type.
+ * and only for Integer we can change max value:
+ * 
+ */
+public class WrapperDemoTest {
+
+
+	@Test
+	public void testNumber127Cp() {
+		
+		Byte i0=Byte.valueOf((byte) 127);
+		Byte i01=127;
+		assertTrue(i0==i01);
+		
+		Short i02=Short.valueOf((short) 127);
+		Short i03=127;
+		assertTrue(i02==i03);
+
+		
+		Integer i1=Integer.valueOf(127);
+		Integer i2=127;
+		assertTrue(i1==i2);
+		
+		
+		Long i3=Long.valueOf(127L);
+		Long i4=127L;
+		assertTrue(i4==i3);
+		
+		Double d1=10.4;
+		Double d2=Double.valueOf(10.4);
+		
+		assertFalse(d1==d2);
+		
+		Float f1=Float.valueOf(10.4f);
+		Float f2=10.4f;
+		
+		assertFalse(f1==f2);
+		
+		Character c1 = Character.valueOf('z');
+		Character c2 ='z';
+		System.out.println((int)c2);
+		assertTrue(c1==c2);
+		
+		Boolean b1 = Boolean.valueOf(false);
+		Boolean b2 = false;
+		assertTrue(b1==b2);
+	}
+	@Test
+	public void testNumber128Cp() {
+		Long i1=128l;
+		Long i2=Long.valueOf(128);
+		assertFalse(i1==i2);
+	}
+	
+		
+}

-Original file line number
+Diff line change
@@ @@ -0,0 +1,9 @@ @@
 +package com.amir.wrapper;
++
++
++
 +public class IntegerCP {
++
++
++
 +}