Convert String to double in Java

2018-05-30 04:57:10

如何将一个String （如"12.34"转换为Java中的double ？

You can use Double.parseDouble() to convert a String to a double :

String text = "12.34"; // example String
double value = Double.parseDouble(text);

For your case it looks like you want:

double total = Double.parseDouble(jlbTotal.getText());
double price = Double.parseDouble(jlbPrice.getText());

如果在将字符串解析为十进制值时遇到问题，则需要将数字中的“，”替换为“。”。

String number = "123,321";
double value = Double.parseDouble( number.replace(",",".") );

double d = Double.parseDouble(aString);

这应该将字符串aString转换为双d。

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