Big double values gives error for java 1.8?

Question

Below code snippet gives error for 1.0E27%10 this arithmetic operation

"ERROR: JDWP Unable to get JNI 1.2 environment, jvm->GetEnv() return code = -2
JDWP exit error AGENT_ERROR_NO_JNI_ENV(183):  [util.c:840]

And the code is

int []A = {1000000000, 1000000000, 1000000000};
int cnt=0;
double product = 1;
for(int i= A.length-1 ;  cnt < 3; i--,cnt++ ) {
     product*=A[i];
}
System.out.println(product%10); //// 1.0E27%10
while(product%10 == 0) {
    product = product/10;
    zeroCnt++;
}

What version of Java are you using? It is most likely a bug in the JVM. I would try a newer update. — Peter Lawrey, Jul 18 '18 at 11:33
BTW This prints `2.0` for me. I suspect that `double` isn't you should be using as it only has about 16 digits of accuracy not 27. I suggest you use BigDecimal instead. — Peter Lawrey, Jul 18 '18 at 11:35
what is the use of `cnt` in `for(int i= A.length-1 ; cnt < 3; i--,cnt++ )`? Can't you just check if `i >= 0`? — Lino, Jul 18 '18 at 11:35

score 1 · Answer 1 · answered Jul 18 '18 at 11:55

1

This is an old JVM bug, rather than an error with doubles. Try updating Java or adding

System.exit(0);

at the end of your code.

answered Jul 18 '18 at 11:55

GDC

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Big double values gives error for java 1.8?

1 Answers1