问题
Ok say I have Multidimensional array that I want to display in JOptionPane.showMessageDialog. I know that when using System.out.println, you use a for loop. However the array size is determined by the user input, therefore I have to use a incrementor.
For example: userinput[k] next to usernumber[k] then the next row would be userinput[k+1] next to usernumber[k+1]
The trouble I am having is that by using my loop, it does each set one at a time in separate windows and not all together in a table in one window.
for (int k = 0; k < userinput.length; k++){
JOptionPane.showMessageDialog(null, userinput[k]);
}
for (int k = 0; k < 2; k++){
JOptionPane.showMessageDialog(null, usernumber[k]);
}
回答1:
Build your output into a single String.
You can use html tags to provide additional formatting
StringBuilder sb = new StringBuilder(64);
sb.append("<html><table>");
for (int ui = 0; ui = < userinput.length; ui++) {
sb.append("<tr><td>");
sb.append(userinput[ui]);
sb.append("</td>");
for (int k = 0; k < 2; k++){
sb.append("<td>");
sb.append(usernumber[k]);
sb.append("</td>");
}
sb.append("</tr>");
}
sb.append("</table></html>");
JOptionPane.showMessageDialog(null, sb.toString());
回答2:
Use a StringBuilder and concatenate each element of the array into a display message,
来源：https://stackoverflow.com/questions/15824033/joptionpane-multidimensional-array-output