ByteBuf buffer = Unpooled.buffer(); long value = 123456L; buffer.writeLong(value);
ByteBuf buffer = Unpooled.buffer(); long[] values = { 123L, 456L, 789L }; for(long value : values) { buffer.writeLong(value); }In this example, we have created an instance of ByteBuf using the Unpooled.buffer() method. We have then defined an array of long values and written them to the buffer using a for loop and the writeLong() method. Package Library: java io.netty.buffer.ByteBuf is a part of the Netty package library, which is an asynchronous event-driven network application framework for rapid development of maintainable high-performance protocol servers and clients.