Error with taking float numbers from an input dialog box.

Hey,
I'm fairly new to java and I'm having some trouble with my project. It gives me errors for lines like this:
float temp = float.parseFloat(JOptionPane.showInputDialog(null, "Enter start time:","Start Time",3));
The errors say something like "';' expected" or "class expected". I know you're supposed to put an f after a decimal when you declare a float and I think it may have something with that. But I don't know where to put it in or if that's the problem at all.
All help greatly appreciated! :D
Máire

Here's all of my code:

Code :

import javax.swing.JOptionPane;
import jm.util.*;
public class Project2
{
    public static void main(String [] args)
    {
        String InputName1, InputName2, OutputName, start, end;
        String menu =  
            "1. Mix Two Files.\n2. Loop a File\n3. Insert Silence Into a File\n4. Fade Part of a File\n5. Chop a File";
        int MenuSelection = Integer.parseInt(JOptionPane.showInputDialog(null,menu));
        if (MenuSelection == 1)
        {
            float [] d1,d2;
         	InputName1 = getFileName("first ");
            InputName2 = getFileName("second ");
            OutputName = getOutName();
            d1 = Read.audio(InputName1);
            d2 = Read.audio(InputName2);
            float [] mixedData;
            if (d1.length > d2.length)
             mixedData = mix(d1, d2);
            if (d2.length > d1.length)
             mixedData = mix(d2, d1);
            Write.audio(mixedData, OutputName);
        }
        else if (MenuSelection == 2)
        {
         InputName1 = getFileName("");
         start = startLoc();
         end = endLoc();
         OutputName = getOutName();
         times = Integer.parseInt(JOptionPane.showInputDialog(null,"Enter the number of times you want to loop this file:"));
         float [] data = Read.audio(InputName1);
         float [] result = loop(InputName1, start, end, times);
         Write.audio(result, OutputName);
        }
        else if (MenuSelection == 3)
        {
	        InputName1 = getFileName("");
	        start = startLoc();
	        end = endLoc();
	        OutputName = getOutName();
	        float [] data = Read.audio(InputName1);
	        float Silence = insertSilence(data, start, end);
	        Write.audio(Silence, OutputName);
    	}
    	else if (MenuSelection == 4)
     	{
	     	InputName1 = getFileName("");
	        start = startLoc();
	        end = endLoc();
	        OutputName = getOutName();
	        float FadeSize = float.parseFloat(JOptionPane.showInputDialogue(null,"Please enter the fade size:");//having trouble with this line
	        float [] data = Read.audio(InputName1); 
	        float [] fadedData = Fade(data, start, end, FadeSize);
	        Write.audio(fadedData, OutputName);
 
     	}
     	else if (MenuSelection == 5)
    	{
	    	InputName1 = getFileName("");
         	start = startLoc();
         	end = endLoc();
         	OutputName = getOutName();
         	float [] data = Read.audio(InputName1);
         	float [] choppedData = chop(data,start,end);
         	Write.audio(choppedData, OutputName);
     	}	
    }
    public static String getFileName(String p)
    {
  		String tempName = JOptionPane.showInputDialog(null,"Enter " + p + "file name:","File Name",3);   
  		return tempName;
  	}
  	public static String getOutName()
  	{
	  	String tempName = JOptionPane.showInputDialog(null,"Enter output file name:","File Name",3);   
  		return tempName;
	} 
	//And even more trouble with these two methods here.
  	public static float startLoc()
  	{
	  	float temp = float.parseFloat(JOptionPane.showInputDialog(null,"Enter start time:","Start Time",3));
   		return temp;
  	}
  	public static float endLoc()
  	{
	  	float temp = float.parseFloat(JOptionPane.showInputDialog(null,"Enter end time:","End Time",3));
   		return temp;
  	}
  	public static float [] mix(float [] longest, float [] shortest)
  	{
   		float [] tempData = new float[longest.length];
   		for (int i = 0; i < shortest.length; i++)
    		tempData[i] = (longest[i] + shortest [i]) * 0.5f;
   		for (int i = shortest.length; i < longest.length; i++)
    		tempData[i] = longest[i] * 0.5f;
   		return tempData;
  	}
  	public static float [] loop(float [] data, int startL, int endL, int repeats)
  	{
	  	int length = endL - startL;
	  	float [] tempData = new float[length * repeats];
	  	for (int i = 0; i < length; i++)
	  		tempData[i] = data[startLocation + i];
	  	for (int i = 0; i < repeats; i++)
	  	{
		  	for (int j = 0; j < length; j++)
		  		tempdata[j + i * length] = tempdata[j];
	 	}
	 	return tempData;
 	}
 	public static float [] insertSilence(float [] data, int startL, int endL);
 	{
	 	int length = endL - startL;
	 	for (int i = 0; i < length; i++)
	 		data[startL + i] = 0.0f;
	 	return data;
 	}
 	public static float [] chop(float [] data, int start, int end)
 	{
	 	int length = end - start;
	 	float [] tempData = new float[length];
	 	for (int i = 0; i < length; i ++)
	 		tempData[i] = data[start + i];
	 	return tempData;
 	}
 	public static float [] Fade(float [] data , int startL, int endL, int fadeSize)
 	{
	 	int length = endL - startL;
	 	float [] tempData = new float[length];
	 	for(int i = 0; i < length; i++)
	 		tempData[i] = data[startL + 1];
	 	for(int i = 0; i < fadesize; i++)
	 		tempData[i] *= (float)i/(float)fadesize;
	 	return tempData;
 	}
}