Need output as to if somewhere within the first array consists second array

Need output as to if somewhere within the first array consists second array

public boolean contains(int[] a,int[] b) {
int w=0;
for(int i=0;i<a.length && w<b.length;i++) {
if(a[i]==b[w])
w++;
else w=0;
}
System.out.println(w);
if(w==b.length) return true;
else return false;
}



This code is failing for the scenario-contains({1, 2, 1, 2, 3}, {1, 2,
3})-for obvious reasons. However, i can't put the right code in that
amends the right output. Please help me out.