testing if editText is empty java
if (TextUtils.isEmpty(editText.getText().toString()))
{
Toast.makeText(MainActivity.this,
"Empty field not allowed!",
Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(MainActivity.this,
"Proceed..",
Toast.LENGTH_SHORT).show();
}check if input is empty java
Program to check if the String is Empty in Java
Last Updated : 22 Jan, 2020
Given a string str, the task is to check if this string is empty or not, in Java.
Examples:
Input: str = ""
Output: True
Input: str = "GFG"
Output: False
Recommended: Please try your approach on {IDE} first, before moving on to the solution.
Approach:
Get the String to be checked in str
We can simply check if the string is empty or not using the isEmpty() method of String class
Syntax:
if (str.isEmpty())
Print true if the above condition is true. Else print false.
Below is the implementation of the above approach:
// Java Program to check if
// the String is empty in Java
class GFG {
// Function to check if the String is empty
public static boolean isStringEmpty(String str)
{
// check if the string is empty or not
// using the isEmpty() method
// and return the result
if (str.isEmpty())
return true;
else
return false;
}
// Driver code
public static void main(String[] args)
{
String str1 = "GeeksforGeeks";
String str2 = "";
System.out.println("Is string \"" + str1
+ "\" empty? "
+ isStringEmpty(str1));
System.out.println("Is string \"" + str2
+ "\" empty? "
+ isStringEmpty(str2));
}
}
Output:
Is string "GeeksforGeeks" empty? false
Is string "" empty? trueCopyright © 2021 Codeinu
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