consigo fazer a leitura do arquivo em fortran da seguinte forma !!
READ ( 1, END = 20 ) IDTWL(tipo integer *8), ICODE(tipo integer)
READ ( 1 ) u(tipo real matriz 121,81)
READ ( 1 ) v(tipo real matriz 121,81))

bom em java os rsultados saem como lixo, utilizando a seguinte forma

long t;
int codigo, i, j;
float u[][],v[][];
u = new float [121][81];
v = new float [121][81];

t = bin.readLong();
codigo = bin.read();
                
        for (i = 0; i < u.length;i++)
                for (j = 0; j < u[i].length;j++)
                        u[i][j]= bin.read();
        for (i = 0; i < v.length;i++)
                for (j = 0; j < v[i].length;j++)
                        v[i][j]= bin.read();

alguma boa sugestao ??? 

os tipos reais em fortran sao 4 bytes iguais as float do java 
integer * 8 = 8 bytes  - long do java 



obrigado 
thiago moraes




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