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  1. #1
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    Angry Eclipse, Java syntax error (probably easy solution)

    I am a beginer to Java (im writing my first program for a class) but I can't seem to figure out a syntax error. Here is some stuff for background. I am using Eclipse 3.0.1 IDE and I downloaded Java 5 Update 1 JDK from Sun and installed both (note I installed Eclipse first, not sure if it matters). Windows XP SP2.

    Eclipse is showing this error...

    Syntax error on token "(", ; expected
    Syntax error on token ")", ; expected

    for the following code.(line 21)

    The IDE underlines the () that I put in RED and says the error is there. I don't get it because I don't think I need a ; anywhere. (and this code is copied directly from my prof's website)

    Thanks for any help, really really new to java, I hope it is something simple.

    Code:
    package edu.uwec.cs.muellerzabel.conversion;
    import javax.swing.JOptionPane;
    
    
    /**
     * @author MUELLERJ ZABELJJ 
     *
     * TODO To change the template for this generated type comment go to
     * Window - Preferences - Java - Code Style - Code Templates
     */
    public class Convert {
    
    	public static void main(String[] args) {
    		private static double getDouble(string prompt) {
    	        double x = 0;
    	        boolean done = false;
    	        while (!done) {
    	            try {
    	                x = Double.parseDouble(JOptionPane.showInputDialog(prompt));
    	                done = true;
    	            } catch (NumberFormatException e) {
    	                JOptionPane.showMessageDialog(null,
    	                        "That wasn't a valid input.  Please enter a number.");
    	            }
    	        }
    	        return x;
    	    }
    		
    		double dblUserInput = 0;
    		double dblEnglish = 0;
    		double dblFeet = 0;
    		double dblInches = 0;
    		
    		dblUserInput = getDouble("Enter the number of meters you would like to convert to feet or inches.");
    		
    		dblEnglish = dblUserInput * 39.37;
    		dblFeet = dblEnglish / 12;
    		dblInches = dblEnglish;
    		
    		if (dblEnglish > 12){
    			JOptionPane.showMessageDialog(null, dblUserInput + " meters is equal to " + dblFeet + " feet.");
    		}else {
    			JOptionPane.showMessageDialog(null, dblUserInput + " meters is equal to " + dblInches + " inches.");
    			
    		}
    	}
    }
    Last edited by muellerj; 02-04-2005 at 07:40 AM.

  • #2
    cfc
    cfc is offline
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    Two problems:
    - Don't declare/define getDouble within main
    - In the arguments for getDouble, String is not capitalized.

    This code compiled and ran perfectly:

    Code:
    package edu.uwec.cs.muellerzabel.conversion;
    import javax.swing.JOptionPane;
    
    
    /**
     * @author MUELLERJ ZABELJJ 
     *
     * TODO To change the template for this generated type comment go to
     * Window - Preferences - Java - Code Style - Code Templates
     */
    public class Convert {
    	private static double getDouble(String prompt) {
    	        double x = 0;
    	        boolean done = false;
    	        while (!done) {
    	            try {
    	                x = Double.parseDouble(JOptionPane.showInputDialog(prompt));
    	                done = true;
    	            } catch (NumberFormatException e) {
    	                JOptionPane.showMessageDialog(null,
    	                        "That wasn't a valid input.  Please enter a number.");
    	            }
    	        }
    	        return x;
    	}
    
    	public static void main(String[] args) {
    		
    		
    		double dblUserInput = 0;
    		double dblEnglish = 0;
    		double dblFeet = 0;
    		double dblInches = 0;
    		
    		dblUserInput = getDouble("Enter the number of meters you would like to convert to feet or inches.");
    		
    		dblEnglish = dblUserInput * 39.37;
    		dblFeet = dblEnglish / 12;
    		dblInches = dblEnglish;
    		
    		if (dblEnglish > 12){
    			JOptionPane.showMessageDialog(null, dblUserInput + " meters is equal to " + dblFeet + " feet.");
    		} else {
    			JOptionPane.showMessageDialog(null, dblUserInput + " meters is equal to " + dblInches + " inches.");
    			
    		}
    	}
    }
    Last edited by cfc; 02-04-2005 at 08:40 AM.

  • #3
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    Smile

    Thanks a lot! I figured someone who knew what they were doing could spot that pretty quickly. Now I don't have to ask my Professor.


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