Match #1:
/using_scroll.java: line 1-19
/java/5713059-5713930-1: line 3-21
//Do your + insertions via Hibernate via batch updates technique. 
<Session session = sessionFactory.openSession();
<Transaction tx = session.beginTransaction();
<   
<ScrollableResults customers = session.getNamedQuery("GetCustomers")
<    .setCacheMode(CacheMode.IGNORE)
<    .scroll(ScrollMode.FORWARD_ONLY);
<int count=0;
<while ( customers.next() ) {
<    Customer customer = (Customer) customers.get(0);
<    customer.updateStuff(...);
<    if ( ++count % 20 == 0 ) {
<        //flush a batch of updates and release memory:
<        session.flush();
<        session.clear();
<    }
<}
<   
<tx.commit();
<session.close();
---
>Session session = sessionFactory.openSession();
>Transaction tx = session.beginTransaction();
>
>ScrollableResults customers = session.getNamedQuery("GetCustomers")
>    .setCacheMode(CacheMode.IGNORE)
>    .scroll(ScrollMode.FORWARD_ONLY);
>int count=0;
>while ( customers.next() ) {
>    Customer customer = (Customer) customers.get(0);
>    customer.updateStuff(...);
>    if ( ++count % 20 == 0 ) {
>        //flush a batch of updates and release memory:
>        session.flush();
>        session.clear();
>    }
>}
>
>tx.commit();
>session.close();

Match #2:
/flush_and_clear_session.java: line 1-15
/java/2876888-2877589-1: line 3-19
//Making new objects persistent flush() and then clear() the session regularly in order to control the size of the first-level cache. 
<Session session = sessionFactory.openSession();
<Transaction tx = session.beginTransaction();
<   
<for ( int i=0; i<100000; i++ ) {
<    Customer customer = new Customer(.....);
<    session.save(customer);
<    if ( i % 20 == 0 ) { //20, same as the JDBC batch size
<        //flush a batch of inserts and release memory:
<        session.flush();
<        session.clear();
<    }
<}
<   
<tx.commit();
<session.close();
---
>Session session = sessionFactory.openSession();
>Transaction tx = session.beginTransaction();
>for ( int i=0; i<100000; i++ ) {
>Customer customer = new Customer(.....);
>    session.save(customer);
>
>    if ( i % 20 == 0 ) { //20, same as the JDBC batch size
>
>        //flush a batch of inserts and release memory:
>
>        session.flush();
>
>        session.clear();
>    }
>}
>tx.commit();
>session.close();

Match #3:
/using_a_StatelessSession.java: line 1-13
/java/2761543-2761630-1: line 3-15
//Operations performed using a stateless session never cascade to associated instances. Collections are ignored by a stateless session. Operations performed via a stateless session bypass Hibernate's event model and interceptors. A stateless session is a lower-level abstraction that is much closer to the underlying JDBC.
<StatelessSession session = sessionFactory.openStatelessSession();
<Transaction tx = session.beginTransaction();
<   
<ScrollableResults customers = session.getNamedQuery("GetCustomers")
<    .scroll(ScrollMode.FORWARD_ONLY);
<while ( customers.next() ) {
<    Customer customer = (Customer) customers.get(0);
<    customer.updateStuff(...);
<    session.update(customer);
<}
<   
<tx.commit();
<session.close();
---
>StatelessSession session = sessionFactory.openStatelessSession();
>Transaction tx = session.beginTransaction();
>
>ScrollableResults customers = session.getNamedQuery("GetCustomers")
>    .scroll(ScrollMode.FORWARD_ONLY);
>while ( customers.next() ) {
>    Customer customer = (Customer) customers.get(0);
>    customer.updateStuff(...);
>    session.update(customer);
>}
>
>tx.commit();
>session.close();

Match #4:
/CriteriaQueryTest.java: line 666-679
/java/2801764-2801934-1: line 3-12
//You'll have to use a Hibernate : Transformers for HQL and SQL blog post gives the following example (where StudentDTO is a non-entity Bean).
<   List resultWithAliasedBean = s.createCriteria(Enrolment.class)
<     .createAlias("student", "st")
<     .createAlias("course", "co")
<     .setProjection( Projections.projectionList()
<         .add( Projections.property("st.name"), "studentName" )
<         .add( Projections.property("co.description"), "courseDescription" )
<     )
<     .addOrder( Order.desc("studentName") )
<     .setResultTransformer( Transformers.aliasToBean(StudentDTO.class) )
<     .list();
<
<   assertEquals(2, resultWithAliasedBean.size());
<
<   StudentDTO dto = (StudentDTO) resultWithAliasedBean.get(0);
---
>List resultWithAliasedBean = s.createCriteria(Enrolment.class)
>  .createAlias("student", "st").createAlias("course", "co")
>  .setProjection( Projections.projectionList()
>                   .add( Projections.property("st.name"), "studentName" )
>                   .add( Projections.property("co.description"), "courseDescription" )
>          )
>          .setResultTransformer( Transformers.aliasToBean(StudentDTO.class) )
>          .list();
>
> StudentDTO dto = (StudentDTO)resultWithAliasedBean.get(0);

Match #5:
/SerializingCollection.java: line 95-98
/java/11653374-11654213-2: line 4-7
//Want to write an object to disk you need use something like this.
<   ByteArrayOutputStream baos = new ByteArrayOutputStream();
<   ObjectOutputStream oos = new ObjectOutputStream(baos);
<   oos.writeObject(o);
<   byte[] buffer = baos.toByteArray();
---
>ByteArrayOutputStream baos = new ByteArrayOutputStream();
>ObjectOutputStream oos = new ObjectOutputStream(baos);
>oos.writeObject(obj);
>byte[] data = baos.toByteArray();

Match #6:
/InstrumentedClassLoader.java: line 58-60
/java/5368704-5368731-1: line 4-10
// If you simply want to know how to append byte arrays, you simply create a new byte array that has a length equal to the sum of the sizes of the arrays you wish to append, then use System.arraycopy to move copy the original arrays.
<     byte[] temp = new byte[ originalClass.length + buffer.length ];
<     System.arraycopy( originalClass, 0, temp, 0, originalClass.length );
<     System.arraycopy( buffer, 0, temp, originalClass.length, buffer.length );
---
>byte[] destination = new byte[ciphertext.length + mac.length];
>
>// copy ciphertext into start of destination (from pos 0, copy ciphertext.length bytes)
>System.arraycopy(ciphertext, 0, destination, 0, ciphertext.length);
>
>// copy mac into end of destination (from pos ciphertext.length, copy mac.length bytes)
>System.arraycopy(mac, 0, destination, ciphertext.length, mac.length);

Match #7:
/ByteCodeHelper.java: line 65-69
/java/5368704-5368731-1: line 4-10
// If you simply want to know how to append byte arrays, you simply create a new byte array that has a length equal to the sum of the sizes of the arrays you wish to append, then use System.arraycopy to move copy the original arrays.
<       byte[] temp = new byte[ classBytes.length + buffer.length ];
<       // copy any previously read bytes into the temp array
<       System.arraycopy( classBytes, 0, temp, 0, classBytes.length );
<       // copy the just read bytes into the temp array (after the previously read)
<       System.arraycopy( buffer, 0, temp, classBytes.length, buffer.length );
---
>byte[] destination = new byte[ciphertext.length + mac.length];
>
>// copy ciphertext into start of destination (from pos 0, copy ciphertext.length bytes)
>System.arraycopy(ciphertext, 0, destination, 0, ciphertext.length);
>
>// copy mac into end of destination (from pos ciphertext.length, copy mac.length bytes)
>System.arraycopy(mac, 0, destination, ciphertext.length, mac.length);

Match #8:
/ArrayHelper.java: line 186-188
/java/4697255-4697284-1: line 3-5
//Combine integer arrays. System.arraycopy is a method you can use to perform this copy.
<   int[] result = new int[ x.length + y.length ];
<   System.arraycopy( x, 0, result, 0, x.length );
<   System.arraycopy( y, 0, result, x.length, y.length );
---
>int[] array1and2 = new int[array1.length + array2.length];
>System.arraycopy(array1, 0, array1and2, 0, array1.length);
>System.arraycopy(array2, 0, array1and2, array1.length, array2.length);

Match #9:
/CacheRegionUtils.java: line 120-123
/java/5283444-5283753-1: line 3-6
//Convert array of strings into a string in Java. 
<   StringBuilder sb = new StringBuilder();
<   for ( String s : elements ) {
<     sb.append( s ).append( c );
<   }
---
>StringBuilder builder = new StringBuilder();
>for(String s : arr) {
>    builder.append(s);
>}

Match #10:
/PersistentSet.java: line 117-122
/java/7445910-7445937-1: line 3-6
//The best way to iterate over a non-generic List. 
<     Iterator iter = set.iterator();
<     while ( iter.hasNext() ) {
<       Object test = iter.next();
<       Object oldValue = sn.get(test);
<       if ( oldValue==null || elementType.isDirty( oldValue, test, getSession() ) ) return false;
<     }
---
>Iterator iter = objects.iterator();
>while (iter.hasNext()) {
>    Object element = iter.next();
>}

Match #11:
/AnnotationBinder.java: line 782-785
/java/5283444-5283753-1: line 3-6
//Convert array of strings into a string in Java. 
<     StringBuilder missings = new StringBuilder();
<     for ( String property : missingIdProperties ) {
<       missings.append( property ).append( ", " );
<     }
---
>StringBuilder builder = new StringBuilder();
>for(String s : arr) {
>    builder.append(s);
>}