How to use JTextArea in JAVA?

   The JTextArea is a subclass under javax.swing, same as JOptionPane. It is a multi-line area that displays plain texts. 


Code:
//import class na gagamitin, dahil me object kelangan din JOptionPane
import javax.swing.JOptionPane;
import javax.swing.JTextArea;




public class JtextArea {


    
       public static void main(String[] args){
           //gumawa ng object(lalagyanNgInfo. Default na sukat(2,2)
           JTextArea lalagyanNgInfo= new JTextArea(2,2);
        
                 //mga kelangan sa program
                 String unangString,
                      pangalawangString,
                      ilalagayNaInfo="";
                 int unangNumber,
                      pangalawangNumber,
                      sum,difference,product;
                double quotient;
        
        //string to integer convertion
        unangString=JOptionPane.showInputDialog("unang number: ");
        unangNumber=Integer.parseInt(unangString);
        pangalawangString=JOptionPane.showInputDialog("pangalawang number: ");
        pangalawangNumber=Integer.parseInt(pangalawangString);
        
        //mga formula
        sum=unangNumber+pangalawangNumber;
        difference=unangNumber-pangalawangNumber;
        product=unangNumber*pangalawangNumber;
        quotient=unangNumber/pangalawangNumber;
        
        //laman ng ilalagay na info sa object(lalagyanNgInfo)
        ilalagayNaInfo+="sum\tdifference\tproduct\tquotient";
        ilalagayNaInfo+="\n"+sum+"\t"+difference+"\t"+product+"\t"+quotient;
        
        lalagyanNgInfo.setText(ilalagayNaInfo);
        
        JOptionPane.showMessageDialog(null,lalagyanNgInfo,"Eto ang mga sagot!",JOptionPane.INFORMATION_MESSAGE);
        
    }
}

OUTPUT: quotient is zero instead 0.xxxx because data type used in quotient is integer. We focused on JTextArea.

SHARE and LEARN!