Java program to extract substring from related strings

Question

Java program to extract substring from related strings

Within my JavaScript code, I am dealing with two string arrays:

var names = [name1, name2, name3, name4];
var values = [value1, value2, value3, value4];

To send these array values to the backend, I have created strings as shown below:

var nameString = "name1,name2,name3,name4";
var valuesString = "value1,value2,value3,value4";

Upon receiving these strings on the Java side, I need a way to remove a particular name from the nameString and ensure that the corresponding value is removed from the valueString. Is there an optimized method to achieve this in Java?

For example, if I want to remove name3, the updated strings should look like this:
  On the Java side:   
     String nameString = "name1,name2,name4";
     String valueString = "value1,value2,value4";

java javascript string

Answer 1

Answer №1

When using JavaScript:

var data = {name1:value1, name2:value1, name3:value1, name4:value1};

You may need to quote the object and then send it as JSON to be parsed in Java. http://www.json.org/java/

As I am not a Java developer, I cannot provide specific code examples, but the method is similar across all languages.

Answer 2

When using JavaScript:

var data = {name1:value1, name2:value1, name3:value1, name4:value1};

You may need to quote the object and then send it as JSON to be parsed in Java. http://www.json.org/java/

As I am not a Java developer, I cannot provide specific code examples, but the method is similar across all languages.

Answer 3

Answer №2

One way to achieve this functionality in Java is demonstrated below:

public static void main(String[] args) {
    String names = "Alice, Bob, Charlie, David";
    String values = "25, 30, 35, 40";

    names = removeElement(names, 1);
    values = removeElement(values, 1);

    System.out.println(names);
    System.out.println(values);

}

private static String removeElement(String value, int index){
    String[] array = value.split(",");
    String[] newArray = new String[array.length-1];

    System.arraycopy(array, 0, newArray, 0, index);
    System.arraycopy(array, index+1, newArray, index, array.length-1-index);

    value = convertArrayToString(newArray);

    return value;
}

private static String convertArrayToString(String[] array){
    StringBuilder result = new StringBuilder();
    for (int i=0; i<array.length; i++) {
        if(i==0){
            result.append(array[i]);
        }else{
            result.append(",").append(array[i]);
        }
    }
    return result.toString();
}

Answer 4

One way to achieve this functionality in Java is demonstrated below:

public static void main(String[] args) {
    String names = "Alice, Bob, Charlie, David";
    String values = "25, 30, 35, 40";

    names = removeElement(names, 1);
    values = removeElement(values, 1);

    System.out.println(names);
    System.out.println(values);

}

private static String removeElement(String value, int index){
    String[] array = value.split(",");
    String[] newArray = new String[array.length-1];

    System.arraycopy(array, 0, newArray, 0, index);
    System.arraycopy(array, index+1, newArray, index, array.length-1-index);

    value = convertArrayToString(newArray);

    return value;
}

private static String convertArrayToString(String[] array){
    StringBuilder result = new StringBuilder();
    for (int i=0; i<array.length; i++) {
        if(i==0){
            result.append(array[i]);
        }else{
            result.append(",").append(array[i]);
        }
    }
    return result.toString();
}

Java program to extract substring from related strings

Answer №1

Answer №2

Similar questions

"Learn how to calculate the total value of a dynamic text box within an ng-repeat loop

Success callbacks parsed from AJAX requests

Is it possible to send multiple HTML input values to a Google Spreadsheet using only JavaScript?

The Firebase promise resolves before the collection is refreshed

Can Selenium in JavaScript be used to retrieve child elements from a webpage?

JQuery: Issues with attaching .on handlers to dynamically added elements

Generating a dynamic form by utilizing a JavaScript JSON object

Adjust a sub-document field using mongoose

Is there a way to make the submit button navigate to the next tab, updating both the URL and the tab's content as well?

Retrieve the element from the most recent append() function invocation

When the field name is clicked, retrieve it and display it in a TOAST message

Creating an AJAX URL in an external JavaScript file within a Django project

Guide on transferring an array generated within a child jQuery function back to the parent function in JavaScript

Dealing with encoding problems in Node.JS when parsing JSON data with UTF-

Error: The property 'combine' of 'winston_1.default.format' cannot be destructured since it is not defined

Every time I try to use the EJS syntax, particularly when I use the 'include' function, the page just won't load

Assistance with setting up a Java sockets server

Mastering Checkbox Features Using KnockoutJS

What's preventing the threads from running simultaneously?

Is it better to use regexp.test or string.replace first in my code?