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Thread: Syntax error

  1. #1
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    Default Syntax error

    import 
    java.awt.event.ActionListener; 
    import java.awt.event.ActionEvent; 
    import javax.swing.JButton; 
     
    public class CalculatorEngine 
    							implements ActionListener { 
     
    		Calculator parent; //a reference to Calculator window 
    		char selectedAction = ' '; // +, -, /, or * 
     
    		double currentResult =0; 
     
    		// Constructor stores the reference to the Calculator 
    		// window in the member variable parent 
    		CalculatorEngine(Calculator parent){ 
     
    		this.parent = parent; 
    		} 
     
    		public void actionPerformed(ActionEvent e){ 
     
    		// Get the source of this action 
    		JButton clickedButton = (JButton) e.getSource(); 
    		String 
    		dispFieldText=parent.displayField.getText(); 
     
    		double displayValue=0; 
     
    		//Get the number from the text field 
    		// if itís not empty 
    		if (!"".equals(dispFieldText)){ 
    		displayValue= Double.parseDouble(dispFieldText); 
    		}
    		Object src = e.getSource(); 
     
    		// For each action button memorise selected 
    		// action +, -, /, or *, store the current value 
    		// in the currentResult, and clean up the display 
    		// field for entering the next number 
     
    		if (src == parent.buttonPlus){ 
    		selectedAction = '+'; 
    		currentResult=displayValue; 
    		parent.displayField.setText(""
    		); 
    		} else if (src == parent.buttonMinus){ 
    		selectedAction = '-'; 
    		currentResult=displayValue; 
    		parent.displayField.setText(""
    		); 
    		}else if (src == parent.buttonDivide){ 
    		selectedAction = '/'; 
    		currentResult=displayValue; 
    		parent.displayField.setText(""
    		); 
    		} else if (src == parent.buttonMultiply){ 
    		selectedAction = '*'; 
    		currentResult=displayValue; 
    		parent.displayField.setText(""
    		); 
    		} else if (src == parent.buttonEqual){ 
    		// Perform the calculations based on selectedAction 
    		// update the value of the variable currentResult 
    		// and display the result 
    		if (selectedAction=='+'){ 
    		currentResult+=displayValue; 
    		// Convert the result to String by concatenating 
    		// to an empty string and display it 
    		parent.displayField.setText(""+currentResult
    		); 
    		}else if (selectedAction=='-'){ 
    		currentResult -=displayValue; 
    		parent.displayField.setText(""+currentResult); 
    		}else if (selectedAction=='/'){ 
    		currentResult 
    		/=displayValue; 
    		parent.displayField.setText(""+currentResult); 
    		}else if (selectedAction=='*'){ 
    		 currentResult*=displayValue; 
    		parent.displayField.setText(""+currentResult); 
    		} 
    		} else{ 
    		// For all numeric buttons append the button's 
    		// label to the text field 
    		String clickedButtonLabel= 		clickedButton.getText(); 
    		parent.displayField.setText(dispFieldText +                                   <<<<This is where the error is
     
    		}
    		}
    }
    		clickedButtonLabel);

    The error is towards the bottom on the dispFieldText it says there is a syntax error, any ideas?


  2. #2
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    Default Re: Syntax error

    Please post the whole error, copied from just as it appears at your end and pasted into your post. Either update your original or add a new reply.

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