The methods that only accept a char value cannot support supplementary characters. ... The methods that accept an int value support all Unicode characters, including supplementary characters. …

Apr 2, 2013 · Other Methods To Consider String.equalsIgnoreCase () value equality that ignores case. Beware, however, that this method can have unexpected results in various locale-related cases, see …

May 31, 2012 · What's the difference between java.lang.String 's replace() and replaceAll() methods, other than the latter uses regex? For simple substitutions like, replace . with /, is there any difference?

Is there a native way to sort a String by its contents in java? E.g. String s = "edcba" -> "abcde"

Primitive question, but how do I format strings like this: "Step {1} of {2}" by substituting variables using Java? In C# it's easy.

One natural way to reverse a String is to use a StringTokenizer and a stack. Stack is a class that implements an easy-to-use last-in, first-out (LIFO) stack of objects.

Nov 15, 2012 · List is an Interface, you cannot instantiate an Interface, because interface is a convention, what methods should have your classes. In order to instantiate, you need some …

Object obj; String methodName = "getName"; Without knowing the class of obj, how can I call the method identified by methodName on it? The method being called has no parameters, and a String …

I'm looking for a simple commons method or operator that allows me to repeat some string n times. I know I could write this using a for loop, but I wish to avoid for loops whenever necessary and a ...

Alternatively, you can use an Ints method from the Guava library, which in combination with Java 8's Optional, makes for a powerful and concise way to convert a string into an int: