What are the common imports I have to use in Java for any program?

Question

I created a class in NetBeans that will be used for string manipulation only. What imports should I use.

I can't even declare a string variable because it didn't autogenerate imports for me. :P Since I'm new, I have no clue what is the bare necesities in the Java world.

This isn't working:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package helloworld;

import java.text;

/**
 *
 * @author Sergio
 */
public class WordManipulations 
{
    public string[] ReturnAllVowels()
    {
        return string[] x;


}
}

It says that string ;Cannot find symbol;

Answer 1

Java identifiers are case sensitive; you want String. Also, no imports are required; java.lang is implicitly imported by the compiler.

Answer 2

Capitalize every occurrence of "string".

The import of java.text is unnecessary.

Answer 3

In Java, its capitalized, so String.

The String class is in the java.lang package. This package is automatically imported into every program.

Answer 4

As others have said String not string.

Here is a link to the naming conventions used for Java (by Sun). And a tool (checkstyle) that, among other things, can enforce naming conventions - it gives some more examples/detail on naming.

Answer 5

These sorts of problems simply go away if you are using an IDE. You may find it usful to use one of the following.

• Eclipse
• NetBeans
• IntelliJ