Java brackets bug in SWITCH statement?

This is driving me crazy! I've searched through my entire code and I can't seem to solve this problem. Here is my code: ``` class Subtarefas { public static void resolve (int flag, int na, Aeroporto a[], int nv, Voo v[]) { switch(flag) { //------------------------------------------------------------------ case 3: {//Incompleto String mat[][] = new String [na][2]; int count=0; int bigcount=0; int indice=0; int np=0; for (int i=0; i<na; i++) { if ( indexOf(np, mat, a[i].nomecidade, a[i].nomepais)== -1 ) { mat[np][0]=a[i].nomecidade; mat[np][1]=a[i].nomepais; np++; } } for (int i=0; i<np; i++) { count=0; for (int j=0; j<np; j++) { if (mat[i][1].equals(mat[j][1])) count++; } if (count>bigcount) {bigcount=count; indice=i;} } System.out.println(mat[indice][1] + " " + bigcount); } //------------------------------------------------------------------ case 4: {//Feito String mat1[][] = new String [nv][2]; int count=0; int bigcount=0; int indice=0; for (int i=0; i<nv; i++) { for (int j=0; j<na; j++) { if (v[i].origem==a[j].cod) mat1[i][0]=a[j].nomepais; if (v[i].destino==a[j].cod) mat1[i][1]=a[j].nomepais; } } for (int i=0; i<na; i++) { count=0; for (int j=0; j<nv; j++) { if (a[i].nomepais.equals(mat1[j][0])) { if (mat1[j][0].equals(mat1[j][1])) count++; } } if (count>bigcount) {bigcount=count; indice=i;} else if (count==bigcount) { int result = a[i].nomepais.compareTo(a[indice].nomepais); if (result<0) {bigcount=count; indice=i;} } } System.out.println(a[indice].nomepais + " " + bigcount); } //------------------------------------------------------------------ default: break; } } ``` So basically I can't find what is wrong here, I can't filter the type {} brackets. There is some kind of bug here, because when I use case 3 I get two outputs, and it is suppose to give me only 1 (I only have 1 System.out.println in that case). I found out when I use case 3 it also goes through case 4. That's not suppose to happen! What should I do? Another option is that there could be a opening bracket { without a closing one }. But I can't find it! Can you help me? Thanks.