When learning any programming language, database is one of the must-learns. The key point is also one of the difficulties. Next, let’s talk about how to learn Java programming and database learning.
1. Database type structure diagram
Collection---->Collections Map----->SortedMap------>TreeMap
Collection---->List----->(Vector \ ArryList \ LinkedList) Map------>HashMap
Collection---->Set---- -->(HashSet \ LinkedHashSet \ SortedSet)
##http://www.php.cn/java-article-375795.html
2. Partial diagram of stack memory, heap memory, and string constant pool ##http://www.php.cn/java -article-375796.html3.JAVA basic data type diagram
http://www.php.cn/ java-article-375798.html4. Automatic type change diagram
http://www.php.cn /java-article-375799.html5. Type conversion - reduce/enlarge conversion diagram
import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Toolkit; import java.awt.color.ColorSpace; import java.awt.geom.AffineTransform; import java.awt.image.AffineTransformOp; import java.awt.image.BufferedImage; import java.awt.image.ColorConvertOp; import java.awt.image.CropImageFilter; import java.awt.image.FilteredImageSource; import java.awt.image.ImageFilter; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO;http://www.php.cn/java-article -375800.html
public static byte[] toByteArray(int number){ int temp = number; byte[] b=new byte[4]; for (int i = b.length - 1; i > -1; i--) { b[i] = new Integer(temp & 0xff).byteValue(); temp = temp >> 8; } return b; }http://www.php.cn/java-article-375801.html
The above is the detailed content of Share the learning path of Java database. For more information, please follow other related articles on the PHP Chinese website!