init

core-java-modules/core-java-lang-oop-2/src/main/java/com/baeldung/accessmodifiers/Student.java

@@ -0,0 +1,41 @@
+package com.baeldung.accessmodifiers;
+
+import java.math.BigDecimal;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class Student {
+
+    private BigDecimal grades; //new representation
+    private String name;   
+    private int age;
+
+    public int getGrades() {
+        return grades.intValue(); //Backward compatibility
+    }
+    
+    public Connection getConnection() throws SQLException {
+        
+        final String URL = "jdbc:h2:~/test";
+        return DriverManager.getConnection(URL, "sa", "");
+
+    }
+    
+    public BigDecimal bigDecimalGrades() {
+        return grades;
+    }
+        
+    public void setAge(int age) {
+        if (age < 0 || age > 150)
+            throw new IllegalArgumentException();
+
+        this.age = age;
+    }
+
+    @Override
+    public String toString() {
+        return this.name;
+    }
+
+}

core-java-modules/core-java-lang-oop-2/src/test/java/com/baeldung/accessmodifiers/PublicAccessModifierTest.java

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+package com.baeldung.accessmodifiers;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
+import org.junit.jupiter.api.TestInstance.Lifecycle;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import java.math.BigDecimal;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+@TestInstance(Lifecycle.PER_CLASS)
+public class PublicAccessModifierTest {
+
+    @Test
+    public void whenUsingIntValue_valuesAreEqual() {
+        
+        assertEquals(0, new BigDecimal(0).intValue());
+    }
+
+    @Test
+    public void whenUsingToLowerCase_valuesAreEqual() {
+        
+        assertEquals("alex", "ALEX".toLowerCase());
+    }
+
+    @Test
+    public void whenConnectingToH2_connectionInstanceIsReturned() throws SQLException {
+
+        final String URL = "jdbc:h2:~/test";
+        Connection conn = DriverManager.getConnection(URL, "sa", "");
+        assertNotNull(conn);
+    }
+
+}