M. Abbas questions

M. Abbas answers

• Convert the java class data into JSON format?
• Why do Java doesn't allow to initialize variables or constants outside classes?
• server view no longer shows server status
• exception: java.lang.NoSuchMethodError: com.lowagie.text.pdf.PdfWriter.setRgbTransparencyBlending(Z)V
• tomcat 7 failed to start from within eclipse
• Call a function before synchronous call
• What does +(?!\d) in regex mean?
• Eclipse IDE does not start
• Oracle insert character into a string
• java.sql.SQLException: No suitable driver found