代码如下：

//Interest.java 
//计算复杂利息 
import java.text.DecimalFormat;
import javax.swing.JOptionPane;
import javax.swing.JTextArea;
 
public class Java_1 {
    public static void main(String args[]) {
        double amount, principal = 1000.0, rate = .05;
        DecimalFormat precisionTwo = new DecimalFormat("0.00");
        //*********Found********** 
        JTextArea outputTextArea = new ____________________(11, 20);
        outputTextArea.append("年\t存款总计\n");
        for (int year = 1; year <= 10; year++) {
            amount = principal * Math.pow(1.0 + rate, year);
            outputTextArea.append(year + "\t"
                    + //*********Found********** 
                    precisionTwo.___________________(amount) + "\n");
        }
        //*********Found********** 
        JOptionPane._____________________(
                null, outputTextArea, "复合利息",
                JOptionPane.INFORMATION_MESSAGE);
        System.exit(0);
    }
}

显示效果如下：