Java - check space between string

Question

I developed a compare text tool using Java Swing. My comparison login works like this.

String A = "Hello World  Java"
String B = "Hello World Java"

What i did is, I basically split the string use " "(space) then add into my array list. The arraylist will look like this.

array1(0) = {Hello} array1(1)={World} array1(2)={Java}
array2(0) = {Hello} array2(1)={World} array2(2)={Java}

Then I compare using the first element in array1 with first element in array2. If it equals the compare is PASS and if it fails I need to show as FAIL . And the out put will be like this.

<pass>Hello<pass><pass>World<pass><pass>Java<pass>  

I have an enhancement where I need to show the spacing as well. So my final output need to be like this.

<pass>Hello<pass><quote><pass>World<pass><quote><quote><pass>Java<pass>

Any idea how I can achieve this? Please advice.

Answer 1

Try to replace parts of original string with elements from array, where elements would be "enhanced" with information of pass or fail.

void checkString(String orig, String part, Boolean passed) {
    if (passed) {
        a.replace(part, "<pass>" + part + "<pass>");
    } else {
        a.replace(part, "<fail>" + part + "<fail>");
    }
}

So your example:

String A = "Hello World  Java"
String B = "Hello World Java"

// Do comparison, like you do

// take your first array
array1(0) = {Hello} array1(1)={World} array1(2)={Java}

// call method for each part in array
checkString(A, array1(0), isPassed);

Answer 2

I tried to run some simulation of this, and i have this results:

String A = "Hello World  Java"

output:

[Hello, World, , Java]

String B = "Hello World Java"

output:

[Hello, World, Java]

so, to solve this, i use the replace to clean the final output, like:

Arrays.toString(yourString.split(" ")).replace(" ", "").replace(",,", ",")

I think it will work with every input.

Hope it helps ^^

Answer 3

Is this you want?

public static String compare(String[] a, String[] b) {
    String op = "";
    int len = a.length > b.length ? a.length : b.length;
    for (int i = 0; i < len; i++) {
        String aVal = "";
        String bVal = "";
        if (a.length > i) {
            aVal = a[i];
        }
        if (b.length > i) {
            bVal = b[i];
        }
        if (aVal.equals(bVal)) {
            op += "<pass>" + a[i] + "<pass>";
        } else {
            op += "<fail>" + a[i] + "<fail>";
        }
        if (i != len - 1) {
            op += "<quote>";
        }
    }
    return op;
}

public static void main(String[] args) {
    String A = "Hello World Java1 A";
    String B = "Hello World Java";
    String[] splitA = A.split(" ");
    String[] splitB = B.split(" ");
    System.out.println(compare(splitA, splitB));
}

Output:

<pass>Hello<pass><quote><pass>World<pass><quote><fail>Java1<fail><quote><fail>A<fail>