Thread: Method Invokation

I need help solving this please: I have TWO methods i want to execute, but i only want the both of them to be executed if any of the methods doesn't return an error! i have tried doing this:

addButton.addActionListener(new ActionListener(){
        	public void actionPerformed(ActionEvent ev){
        		boolean valid = true;
        		String fnField = fnameField.getText();
        		String mnField = mnameField.getText();
        		String lnField = lnameField.getText();
        		String user = usnField.getText();
        		String sx = group.getSelection().getActionCommand();
        		//
        		@SuppressWarnings("deprecation")
				String pwd = pwdField.getText();
        		//
        		String img = imagePath.getText().trim();
        		Insert ins = new Insert();
        		int numField = 0;
        		// 
        		employee emp = new employee();
        		String errCheck = emp.err("");
        		//
        		if(fnField.equals(errCheck)){
        			valid = false;
        		}
        		if(mnField.equals(errCheck)){
        			valid = false;
        		}
        		if(lnField.equals(errCheck)){
        			valid = false;
        		}
        		if(user.equals(errCheck)){
        			valid = false;
        		}
        		if(pwd.equals(errCheck)){
        			valid = false;
        		}
        		if(isNum(numField) <= 0){
        			valid = false;
        			JOptionPane.showMessageDialog(null, "The Id field must be a"
        					+ " number greater than 0!");
        		}
        		if(img.equals(errCheck)){
        			valid = false;
        			JOptionPane.showMessageDialog(null, "Please Choose an image!");
        		}
        		if(valid){
        	 **  emp.addEmployee(isNum(numField), user, pwd, fnField, mnField, lnField, sx);
            **  ins.ImageInsert(isNum(numField), (new File(img)));
        	  }
        	}
        });

//
errCheck() is a method i created to check for errors in my forms! But i noticed that
** ins.ImageInsert(isNum(numField), (new File(img))); is executed even if there's an error with this: ** emp.addEmployee(isNum(numField), user, pwd, fnField, mnField, lnField, sx);
//
What can i do to prevent any of them executing if there's an error generated by at least one of them?

Thanks Man. But am sure that's pretty much what i did on my code as you can see! But even at that, one of the method tends to execute despite the fact that the other one returned an error. Maybe am doing something wrongly!

Actually the code makes use of the value of the boolean within an actionPerformed method. The objective is to check if form variables are unassigned, if the are; the errCheck() method is a method that returns a message telling the user that a field has been left empty or unfilled. But if no field is empty or blank or null as the case may be, the ImageInsert() and addEmployee() of the employee class are executed! But i noticed that one of the methods e.g the ImageInsert() method is executed even if there was an error displayed from the errCheck() method. Now the addEmployee() method adds an employee records into the `employee` table of my database,while the ImageInsert() method inserts images into the `employeeImages` table of the same database. Hope you can understand me now?

--- Update ---

This is my errorCheck() method:

	public String err(String e){
		JPanel panel = new JPanel();
		panel.setLayout(new java.awt.FlowLayout());
		JLabel errLabel = new JLabel();
 
		if(e.length() == 0){
			errLabel.setText("A field is missing!");
			errLabel.setFont(new Font("MonoSpaced", Font.BOLD+Font.ITALIC, 13));
			errLabel.setForeground(new Color(120,100,100));
 
			JOptionPane.showMessageDialog(panel,errLabel, "Error", JOptionPane.OK_OPTION);
		}
		return e;
	}

I understand what you are trying to say man, my bad! the method isn't errCheck(), the method is err(). errCheck is a variable referencing the method err(). err() is a method in a Class named employee(), i've used the emp object to call the method err(): that is; emp.err(). Where emp is an instance of the class employee.
Sorry for the confusion - my apologies please!

Never Mind! Solved It already! Thanks Though!