Java programming read input format output from console and from inputbox

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Using dialog box for Input and Output

Using Console output windows to prompt for Input and output is very old-fashioned . And sometimes outdated. The more current way is to create a separate pop-up windows for each input.



Call the static showInputDialog method of the JOptionPane class, and supply the string that prompts the input from the user. For example:

Read an Integer

String strNumber= JOptionPane.showInputDialog("Enter an integer number:");

The above method returns a String object.

Use the Integer.parseInt(strNumber) to convert the strNumber to an Integer intNumber

int intNumber = Integer.parseInt(strNumber) ;



Read a number with decimal points.

String strPrice= JOptionPane.showInputDialog("Enter a price:");

The above method returns a String object.

Use the Double.parseDouble(strPrice) to convert the strPrice to a double number dblPrice

double dblPrice = Double.parseDouble(strPrice) ;

Display on a messgebox

JOptionPane.showMessageDialog(null, "Price : " + price);
Категория
Язык программирования Java
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