alguém pode olhar este código e me dizer se tem algo errado? [resolvido]

import <a href="http://java.io">java.io</a>.*;

class ex4

{

public static void main ( String args[] ) {

int[] vet1 = new int[10];

int[] vet2 = new int[10];

vet1[0] = 0;
     vet1[1] = 1;
     vet1[2] = 2;
     vet1[3] = 3;
     vet1[4] = 4;
     vet1[5] = 5;
     vet1[6] = 6;
     vet1[7] = 7;
     vet1[8] = 8;
     vet1[9] = 9;
     vet2[0] = 5;
     vet2[1] = 4;
     vet2[2] = 3;
     vet2[3] = 2;
     vet2[4] = 1;
     vet2[5] = 12;
     vet2[6] = 11;
     vet2[7] = 10;
     vet2[8] = 9;
     vet2[9] = 8;

     imprime( vet1 );
     imprime( vet2 );
     Uniao( vet1, vet2 );
     diferenca( vet1, vet2 );
     diferenca( vet1, vet2 );
     Contem( vet1, vet2 );
     Contem( vet2, vet1 );

public static void imprime( int[] vet )

{

for ( int inc = 0; inc < vet.length; inc++ )

System.out.println( vet[ inc ] );

}

public static void Uniao( int[] vet1, int[] vet2 )

{

for ( int inc = 0; inc < vet.length; inc++ )

System.out.println( String.valueOf( vet1[ inc ] + vet2[ inc ] ) );

}

{

for ( int inc = 0; inc < vet.length; inc++ )

System.out.println( String.valueOf( vet1[ inc ] - vet2[ inc ] ) );

}

{

for ( int inc = 0; inc < aivet.length; inc++ ) {

if ( vet2 == vet1 ) {

System.out.println( String.valueOf( vet1[ inc ] ) + " U " + String.valueOf( vet2[ inc ] ) );

}

}

}