java - printing all the array value -

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class arrayapp{      public static void main(final string[] args){       long [] arr;       arr= new long[100];      int i;      arr[0]=112;      arr[1]=111;      for(i=0;i<arr;i++) {      system.out.println(arr[i]);      }    }  }

i error, 

arrayapp.java:10: operator < cannot applied int,long[]         for(i=0;i<arr;i++) {                  ^

you need use size of array, arr.length.

for (int = 0; < arr.length; ++i)

as of java 1.5, can use each loop if need access array data.

for ( long l : arr ) {     system.out.println(l); }

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