Question

I have some code here that calculates the maxValue of an array:

 public static int getMaxValue(int[] marks){
     int maxValue = marks[0];
     for(int i=1;i < marks.length;i++){
         if(marks[i] > maxValue){
             maxValue = marks[i];
         }
     }
     return maxValue;
 }

I want to display the maxvalue when a button is pressed by the user. This is what I have so far but it does not work:

private void analyzeButtonActionPerformed(java.awt.event.ActionEvent evt) {

    maxValue mv = new maxValue ();
    analyzeTextArea.setText("Maximum:" + maxValue.toString());

}

Thanks for any help!

Answer 1

I think you’re looking for something like this…

private void analyzeButtonActionPerformed(java.awt.event.ActionEvent evt) {
    analyzeTextArea.setText("Maximum:" + getMaxValue(arrayOfValues));
}

To call a method, you don’t need to do anything other than call methodName(inputValues) – you can’t create an instance of the method by doing new methodName()

If the method is in a different class, and it is a static method like your case, you can do this…

private void analyzeButtonActionPerformed(java.awt.event.ActionEvent evt) {
    analyzeTextArea.setText("Maximum:" + MyClass.getMaxValue(arrayOfValues));
}

Otherwise if the method is in a different class and it isn’t static, then you create an instance of the class first, then call the method…

private void analyzeButtonActionPerformed(java.awt.event.ActionEvent evt) {
    MyClass example = new MyClass();
    analyzeTextArea.setText("Maximum:" + example.getMaxValue(arrayOfValues));
}