Compare multiple strings android

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what I am trying to do is check if multiple srings are null in order to go to the next activity, something like this:

if( string1.equal(null) && ... stringN.equal(null))
{ Toast.makeText(this, "something is empty", Toast.LENGTH_SHORT).show();}
else
{ GO TO THE NEXT ACTIVITY}

all of the strings have to have content... Any help would be great

If you have have a variable number of strings to check I would do something like the following:

private boolean validate(String... items) {
  for (String item : items) {
    if (TextUtils.isEmpty(item)) {
      return false;
    }
  }
  return true;
}

Then your code would call the validate method with as many strings as you need to validate:

if (validate(string1, string2, stringN)) {
  Toast.makeText(this, "something is empty", Toast.LENGTH_SHORT).show();
} else { 
  // GO TO THE NEXT ACTIVITY
}

Compare one String with multiple values in one expression, I found the better solution. This can be achieved through RegEx: if (str.matches(" val1|val2|val3")) { // remaining code }. For case insensitive matching: Compare two strings in Java Android without case sensitive example. Check two strings is equal or not using equalsIgnoreCase() and result show on screen.

If your strings are in a List or Array, then you could iterate them.

If using an ArrayList:

private boolean verify(final ArrayList<String> list)
{
    for (String entry : list)
    {
        if (TextUtils.isEmpty(entry))
            return false;
    }

    return true;
}

Or if using an array, same thing just changed the parameter to String[]:

private boolean verify(final String[] list)
{
    for (String entry : list)
    {
        if (TextUtils.isEmpty(entry))
            return false;
    }

    return true;
}

Right way to Compare String in Java, The right way of comparing String in Java is to either use equals(), equalsIgnoreCase(), or compareTo() method. You should use equals() method to check if two String contains exactly same characters in same order. It returns true if two String are equal or false if unequal. For a Perl program that I'm working on right now, I need to match the elements of an array of strings against several patterns, and then take an action if the current string matches one of my patterns. This is pretty easy in this case, in part because it's easy to match a string against multiple patterns in Perl, and also because my patterns

You can also do it like this:

private String[] array;

private String one = "one";
private String two = "two";
private String three = "three";
private String four = "four";
private String five = "five";


private void someMethod(){
    if(isStringsNotNull(getStringArray())){
        //Start another activity
    } else {
        //Do something
    }
}

private String[] getStringArray(){
    return new String[]{one, two, three, four, five};
}

private Boolean isStringsNotNull(String[] array){
    for(String str: array){
        if(str == null){
            return false;
        }
    }
    return true;
}

Good answer @PerracoLabs, but isEmpty only check if the length is 0. Isn't it ?

Comparing Strings in Java, The String class overrides the equals() inherited from Object. This method compares two Strings character by character, ignoring their address. It� The rules for deciding which case to use for a given language and quantity can be very complex, so Android provides you with methods such as getQuantityString() to select the appropriate resource for you. Although historically called "quantity strings" (and still called that in API), quantity strings should only be used for plurals. It would be

if you are using java8 / lambda, you can try using this function:

List<String> stringList = new ArrayList<>(Arrays.asList(string2.split(" "))); // Split the string into list
        // compare the list with the source of the string, if match put into the list of result
        List<String> result = stringList.stream().filter(new Predicate<String>() {
            @Override
            public boolean test(String s) {
//                return string1.contains(s); // case sensitive
                return Pattern.compile(Pattern.quote(s), Pattern.CASE_INSENSITIVE).matcher(string1).find(); // case insensitive
            }
        }).collect(Collectors.toList());

        // check the match results
        if(result.size()<stringList.size()){
            Log.d("test", "onCreate: not match");
        }else{
            Log.d("test", "onCreate: match");
        }

Compare two Strings in Java, Using user-defined function : Define a function to compare values with following conditions : if (string1 > string2) it returns a positive value. if both the strings are� You could store all the strings that you want to compare str with into a collection and check if the collection contains str. Store all strings in the collection as lowercase and convert str to lowercase before querying the collection. For example:

Java, There are many ways to compare two Strings in Java: Using == operator Below example illustrate the use of == for string comparison in Java: filter_none. edit Method 5: Using compare() method. In Java for locale specific comparison, one should use Collator class which is in java.text package. The one most important feature of Collator class is the ability to define our own custom comparison rules. Below example illustrate the use of compare() method in Java to compare Strings:

Compare a String to Multiple Strings in [SOLVED], simple use ifelseif ladder to get output. Like: if(a.equals(b)) { } elseif(a.equals(c)) { } elseif(a.equals(d)) { } else { }. i think its work. In java, when using == on two objects, you're not actually comparing the strings themselves. You'll need to use .equals(String). == actually compares the two object's references, not their values. string1.equals(String target) compares the two strings based off of the actual characters in the strings.

Comparing Strings and Portions of Strings (The Java™ Tutorials , The following table lists these methods. Methods for Comparing Strings. Method, Description. boolean endsWith(String suffix) boolean startsWith(String prefix)� Text Compare! is an online diff tool that can find the difference between two text documents. Just paste and compare.