Round to 2 decimal places

2018-06-06 22:24:13

Possible Duplicate:
Round a double to 2 significant figures after decimal point

I know that there are plenty of examples on how to round this kind numbers. But could someone show me how to round double, to get value that I can display as a String and ALWAYS have 2 decimal places?

你可以使用String.format("%.2f", d) ，你的double会自动舍入。

一个简单的方法来做到这一点：

    Double d;
    Int i;
    D+=0.005;
    i=d*100;
    Double b = i/100;
    String s = b.toString():

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