如何使用String.split(",")；我在文本框中输入"0.4,0.18,0.1,0.1,0.07,0.06,0.05,0.04",想让 double weight[]={0.4,0.18,0.1,0.1,0.07,0.06,0.05,0.04};

Question

double weight[]={0.4,0.18,0.1,0.1,0.07,0.06,0.05,0.04};这里有8个数,还想让n=8;

Answer 1

String str="12.02,12.12,45.45,12.54";
String [] temp=str.split(",");
double []ss=new double[temp.length];
for (int i = 0; i < temp.length; i++) {
ss[i]=Double.valueOf(temp[i]);
}

Answer 2

楼上正解，
另外
n =ss.length

Answer 3

String s = "0.4,0.18,0.1,0.1,0.07,0.06,0.05,0.04";  //s = JTextField.getText();
String[] ss = s.split("\\s\\,\\s");
double[] weight = new double[ss.length];
for (int i = 0; i < ss.length; i++) {
weight[i] = Double.parseDouble(ss[i]);
}