Answer:
This article shows how to use regex to remove spaces in between a String.
A string with spaces in between.
String text = "Hello World Java.";
We want to remove the spaces and display it as below:
Hello World Java.
1. Java regex remove spaces
In Java, we can use regex \\s+ to match whitespace characters, and replaceAll("\\s+", " ") to replace them with a single space.
Regex explanation.
`\\s` # Matches whitespace characters.
+ # One or more
StringRemoveSpaces.java
package com.mkyong.regex.string;
public class StringRemoveSpaces {
public static void main(String[] args) {
String text = "Hello World Java.";
String result = text.replaceAll("\\s+", " ");
System.out.println(result);
}
}
Output
Terminal
Hello World Java.
Answer:
All of the above
Explanation:
A local variable is a variable which is declared within a method or is an argument passed to a method, it scope is usually local (i.e. it is hidden from other method). it can also have the same name as a local variable in another method and it loses the values stored in them between calls to the method in which the variable is declared. So all the option listed above are correct.
Answer:
file_name = 'orders.txt'
file_obj = open( file_name, 'r' )
lines = file_obj.read()
print(lines.upper(), end = '')
Explanation:
- Define the name of the file
.
- Use the built-in open function to open the file in read mode
.
- Use the built-in read function to read the file and assign this to lines variable.
- Finally display the lines by converting them to capital alphabets by using the built-in upper() function.
I think: B,C,D. You do not need to write notes on a thing that you will only see, but you need a date, key words, and main ideas.
I belive Nexus is not a Operating system, I am not a pro at knowing all of the operating system.
