Double turn BigDecimal accuracy problems

First, enter:

Output:

Use new BigDecimal (), accuracy problems

Second, enter:

Output:

new BigDecimal (), the first will be converted to Double String, resolve

Third, enter:

Output:

Use BigDecimal.valueOf (), no accuracy problems

 

Summary: To solve the problem of progress that can occur when doing arithmetic Double, Double will be converted to BigDecimal do arithmetic, conversion method is best to use BigDecimal.valueOf ().