Java Array valores por defecto: https://es.stackoverflow.com/q/102985/29967, Java

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import java.util.*;
import java.lang.*;

class Rextester
{  
    public static void main(String args[])
    {

System.out.println("Byte:");
        byte[] bytes = new byte[7];          
        for (Byte by : bytes)
            System.out.print(by + " ");

System.out.println("\n\nShort:");
        short[] shorts = new short[7];          
        for (Short sh : shorts)
            System.out.print(sh + " ");

System.out.println("\n\nInt:");
        int[] ints = new int[7];          
        for (Integer inte : ints)
            System.out.print(inte + " ");

System.out.println("\n\nLong:");
        long[] longs = new long[7];          
        for (long lng : longs)
            System.out.print(lng + " ");

System.out.println("\n\nFloat:");
        float[] floats = new float[7];          
        for (float flt : floats)
            System.out.print(flt + " ");

System.out.println("\n\nDouble:");
        double[] doubles = new double[7];          
        for (Double dbl : doubles)
            System.out.print(dbl+ " ");

System.out.println("\n\nChar:");
        char[] arrChars = new char[7];          
        for (char chs : arrChars)
            System.out.print(chs+ " ");

System.out.println("\n\nString:");
        String str[] = new String[7];
        for (String s : str)
            System.out.print(s + " ");

System.out.println("\n\nBoolean:");
        boolean bols[] = new boolean[7];
        for (boolean bol : bols)
            System.out.print(bol + " ");

}
}

[ + ] Show input
Compilation time: 1.03 sec, absolute running time: 0.13 sec, cpu time: 0.12 sec, memory peak: 18 Mb, absolute service time: 1,17 sec

Java Array valores por defecto: https://es.stackoverflow.com/q/102985/...