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How to Print Array in Java? Printing String, Integer, Byte and two dimensional Array

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Javin Paul

Posts: 1090
Nickname: javinpaul
Registered: Jan, 2012

Javin Paul is Java Programmer working on Finance domain.
How to Print Array in Java? Printing String, Integer, Byte and two dimensional Array Posted: Mar 26, 2014 9:17 AM
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Have you tried printing array in Java before? What did you do? just passed array to println() method and expecting it print its elements? Me too, but surprisingly array despite being Object and providing length field, doesn't seem overriding toString() method from java.lang.Object class. All it prints is type@somenumber. This is not at all useful for any one who is interested in seeing whether array is empty or not, if not then what elements it has etc. To print Java array in a meaningful way, you don't need to look further because your very own Collection framework provides lots of array utility methods in java.util.Arrays class. Here we have toString() and deepToString() method to print array in Java. These methods are overloaded, much like System.out.println() method to accept all primitive types, which means a different method is called if you pass boolean array, and a different one is called when you print integer array. Same is true with deepToString(), which is used to print two dimensional array in Java. In this Java array tutorial, we will see examples of printing string array, integer array, byte array and a two dimensional array in Java. Rest of them are like that, which means by following these examples, you should be able to print boolean, char, short, float, double and long array by your own.

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