Java 如何格式化字符串以显示两位小数
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how to format string to show two decimal places
提问by Zidane
I am facing a slight issue when trying to get two decimal places after pasring double to string and trying to format
在将 double 转换为字符串并尝试格式化后尝试获得两位小数时，我遇到了一个小问题
pieChart.setCenterText("$" + "" + "" +String.format( "% 1$ .2f", Double.toString(dataCost),""));
can anyone help me improve the above line of code so that it can display to two decimal places? You will also notice that I am trying to leave a space between the dollar sign and the value
谁能帮我改进上面的代码行，以便它可以显示到两位小数？你还会注意到我试图在美元符号和值之间留一个空格
采纳答案by mdDroid
You can use String.format("%.2f", d), your double will be rounded automatically
您可以使用String.format("%.2f", d)，您的双精度值将自动四舍五入
pieChart.setCenterText("$ " + String.format("%.2f", d));
回答by Abhishek Patel
Try Like This
像这样尝试
pieChart.setCenterText("$ " + String.format("%.2f", dataCost));
回答by Bhoomit_BB
Following code might help you
以下代码可能对您有所帮助
double a = 1.234567;
double a = 2;
NumberFormat nf = new DecimalFormat("##.##");
System.out.println(nf.format(a));
System.out.println(nf.format(a));
and the output will be
输出将是
1.23
2
it only show decimal places if needed, Enjoy! :)
如果需要，它只显示小数位，享受！:)
回答by Sarhad Salam
You can use DecimalFormat.
您可以使用十进制格式。
import java.text.DecimalFormat;
DecimalFormat money = new DecimalFormat (" float val = 1245.235645f;
double ans = Double.parseDouble(new DecimalFormat("##.##").format(val));
System.out.println(ans);
.00");
System.out.println(money.format(dataCost));
回答by Sathish Kumar J
Try this.
尝试这个。
Package : import java.text.DecimalFormat;
Note : ##.## means 2 digits will be displayed after the .(dot)
##代码##注意：##.## 表示 .(dot) 后会显示 2 位数字
this should helps you.
这应该对你有帮助。
