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Arrays de strings

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String arrays

  • Strings can be gathered into arrays.

Arrays de strings

  • Program output: Original array: This is a test. Modified array: This was a test, too!

Strings cannot be changed

  • The content of a String object in Java is immutable; Once created, it cannot be changed.

  • This immutability allows Java to implement strings more efficiently.

  • To create a variation of a String, you need to create a new String object.

  • Unused strings are automatically collected by the garbage collector.

  • Although the contents of a String are immutable, reference variables can change to point to other objects.

  • String substring(int initialindex, intfinalindex);

  • The substring() method exemplifies immutability, returning a new String without changing the original.

Arrays de strings

  • Program output:
    orgstr: Java makes the Web move.
    substr: makes the Web.

  • Original string orgstr remains unchanged and substr contains the substring.

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