The difference is visible when you use the single quote with the + sign. The char value is converted to the ascii value and then summed up.
However, you have to be careful when using in concatenation with a String. The value is just concatenated and not ascii converted.
public class UsageOfSingleQuote
{
public static void main(String args[])
{
UsageOfSingleQuote usageOfSingleQuote = new UsageOfSingleQuote();
usageOfSingleQuote.proceed();
}
private void proceed()
{
System.out.println("Prints: " + 'A'); //Prints the char
System.out.println("Prints: " + 'a'); //Prints the char
System.out.println('A' + 'A'); //Converts to ascii value , sums up and then prints the value
System.out.println("Abc" + 'A'); //Pure String concatenation
}
}
/*
Expected output:
[root@mypc]# java UsageOfSingleQuote
Prints: A
Prints: a
130
AbcA
*/
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