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String Handling

Given that all Java programs do at least a bit of it, you should know the internals of String handling very well. It supports many useful methods for string manipulations, but not always very performant. Check out the questions and answers about this topic.

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      Questions & Answers
      = answered, = unanswered

      General:

        What is a String and how do I create one?
        How do I determine the length of a String?
        How do I convert a character array to a String?
        How do I convert a String into a character array?
        How do I determine whether a String contains another String?
        How do I get a portion of a String?
        How do I find the first occurrence of a character or String in another String?
        How do I convert a String to lowercase or uppercase?
        How do I concatenate two Strings?
        How do I compare two Strings?
        What is a better way to compare Strings?
        How do I determine whether two Strings are equal?
        How do I determine whether parts of two Strings are equal?
        How do I get a single character from a String?
        How do I replace characters in a String?
        How do I remove leading and trailing whitespace from a String?
        How do I convert a primitive to a String?
        What is the maximum capacity of a String or StringBuffer?
        What is the difference between the StringBuffer's capacity() and length()?
        How do I pad strings with spaces for display?
        Why does the method replace() not work?
        How do I convert my String to a Reader?
        How do I convert my String to an InputStream?
        What is the difference between String a="a" and String a=new("a") ?
        How do I capitalize the first letter of every word in a String?
        How do I insert a value in a StringBuffer?
        How do I compare Strings without getting a NullPointerException?


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