Java/Array/array1.java at master · Programming1212/Java

39 lines (27 loc) · 1.21 KB

class array1

{

public static void main(String [] args)

{

//1:At the time of array creation compulsory we should specify the size

// int [] a=new int[];//C.E:array dimension missing

//2:It is legal to have an array with size zero in java.

int[] b=new int[0];

System.out.println(b.length);//0

//3:If we are taking array size with -ve int value then we will get runtime exception

int[] c=new int[-3];//R.E:NegativeArraySizeException

//4:Only allowed data type for array decleration are (byte,short,char,int) and other are NOT allowed

int[] d=new int['a'];//(valid)

byte bite=10;

int[] a2=new int[bite];//(valid)

/*long used*/int[] a3=new int[10l];//C.E:possible loss of precision//(invalid)

/*double used*/int[] a4=new int[10.5];//C.E:possible loss of precision//(invalid)

//declare 2 2D arrays

int [][] tmp1,tmp2;

tmp1=new int[2][3];

tmp2=new int[3][4];

//here tmp3 is 2D array but tmp4 is 1D array

int []tmp3[],tmp4;

tmp3=new int[2][3];

tmp4=new int[3][4];//Error assigning 2D array to 1D array

}

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