How to convert String type to double type in java

If we want to convert String type data to Double type, we can use the Double.parseDouble() method to achieve this.

For example, we now want to convert the String type data "6.145" to the Double type and retain two decimal places. The implementation method is:

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The specific code is as follows:

String a = “6.145”;
Double d= Double.parseDouble(a);
DecimalFormat df = new DecimalFormat(“0.00”);
String s = df.format(d);

The final variable s output is 6.15 (rounded).

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