Real's How-to

Dump array contentTag(s): Language

JDK1.5+

Convert the array to a List and then convert to String. This technique works only with classes and not with primitives like int or double.

public class Test {
  public static void main(String args[]) {
    String s[] = {"a", "b", "c", "d"};

    System.out.println(java.util.Arrays.asList(s).toString());
    // output
    // [a, b, c, d]
  }
}

java.util.Arrays provides new ways to dump the content of an array. It's even possible to dump muti-dimensional arrays.

public class Test {

  public static void main(String args[]) {
    String s[] = {"a", "b", "c", "d"};
    double d [][]= {
        {0.50, 0.70,  0.40, 0.60},
        {0.50, 1.10,  0.50, 0.80}
    };
    System.out.println(java.util.Arrays.toString(s));
    System.out.println(java.util.Arrays.deepToString(d));
    // output
    // [a, b, c, d]
    // [[0.5, 0.7, 0.4, 0.6], [0.5, 1.1, 0.5, 0.8]]
  }
}

You can also use the new shorthand notation to iterate through an array :

public class Test {
  public static void main(String args[]) {
    String s[] = {"a", "b", "c", "d"};
    for (String element : s) {
      System.out.println(element);
    }
  }
}

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Dump array contentTag(s): Language

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JDK1.5+