Problem with return statement...

Question

hey guys!
i'm new to this forum so don't be angry if i post or do something wrong :) anyway, my problem:
i have a litle method that checks if a file exist and if it exist i want it to return true.
the real problem is that when a if&else statement checks if the method is true or false
it dont care if the method has returned false it just thinks it's true.
well it's kind of hard to explain so just take a look at the code, output and then u will understand :)
import java.io.*;
public class task1_11 {
public static void main(String[] args) {
    System.out.println("does file exist?");
    boolean o= check();
    if(o=false){
           System.out.println("File didn't exist");
         System.out.println("discard sending info...");
    else if (o=true){
          System.out.println("ok");
         System.out.println("Sendning information...");
         ListMovies LM = new ListMovies();
         LM.loanMovie();
         LM.go();
    else{
public static boolean check(){
        File fi = new File("D:\\out2.txt");
if (fi.exists()){
System.out.println("file exist");
System.out.println("returning true");
return true;
else {
System.out.println("file don't exist");
  System.out.println("returning false");
    return false;
}when i run this code the output is:
does file exist?+
file don't exist+
returning false+
ok+
Sendning information...+

Answer 1

I guess it should be like this:
import java.io.*;
public class task1_11 {
public static void main(String[] args) {
    System.out.println("does file exist?");
    boolean o= check();
// '=' is for assignment, '==' is for comparison
    if(o==false){
           System.out.println("File didn't exist");
         System.out.println("discard sending info...");
    else if (o==true){
          System.out.println("ok");
         System.out.println("Sendning information...");
         ListMovies LM = new ListMovies();
         LM.loanMovie();
         LM.go();
    else{
public static boolean check(){
        File fi = new File("D:\\out2.txt");
if (fi.exists()){
System.out.println("file exist");
System.out.println("returning true");
return true;
else {
System.out.println("file don't exist");
  System.out.println("returning false");
    return false;
}