Selección en java



import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Seleccion {
public static void main(String[] args) throws IOException {
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
System.out.println("ingrese numero de datos a ingresar: ");
int tam = Integer.parseInt(in.readLine());
int arr[] = new int[tam];
int j = 0;
for (int i = 0; i < arr.length; i++) {
j+=1;
System.out.println("Elemento "+j+":");
arr[i]=Integer.parseInt(in.readLine());
}
OrdenarSeleccion(arr);
imprimir(arr);
}
private static void OrdenarSeleccion(int[] vector) {
int menor, pos,j, tmp;
for (int i = 0; i < vector.length-1; i++) {
menor=vector[i];
pos=i;
for ( j = i+1; j < vector.length; j++) {
if(vector[j]<menor){
menor=vector[j];
pos=j;
}
}
if(pos!=i){
tmp= vector[i];
vector[i]=vector[pos];
vector[pos]=tmp;
}
}
}
public static void imprimir(int[] vector){
for (int i = 0; i < vector.length-1; i++) {
System.out.print(vector[i]+" ");
}
System.out.println(vector[vector.length-1]);
}
}