Question

假设代码如下：

if (int i = 1) {
        process = Runtime.getRuntime().exec("perl D:\\Soft\\Eclipse\\WorkSpace\\FirstPerl.pl");
        process.waitFor();
}
else if(int i = 2) {
     process = Runtime.getRuntime().exec("perl D:\\Soft\\Eclipse\\WorkSpace\\secondPerl.pl");
     process.waitFor();
}

//so on ..

我可以通过多种方式将路径声明为D:\\Soft\\Eclipse\\WorkSpace\\并实现以下内容，而不是多次重复路径String：

String path = "D:\\Soft\\Eclipse\\WorkSpace\\";
if (int i = 1) {
    process = Runtime.getRuntime().exec("perl"+path+"FirstPerl.pl");
    process.waitFor();
}
else if(int i = 2){
    process = Runtime.getRuntime().exec("perl"+path+"secondPerl.pl");
    process.waitFor();
}

Answer 1

是的，这是非常基本的......

String[] scripts = new String[] { "firstPerl.pl", "secondPerl.pl" };
Path script = Paths.get(path, scripts[i-1]); // or 0-base i in the first place
process = Runtime.exec("perl " + script.toAbsolutePath());
process.waitFor();

Answer 2

String path =“D：\ Soft \ Eclipse \ WorkSpace \”;

int i = 0;

if（i == 1）{

String newpath =“perl”+ path +“FirstPerl.pl”;

。

过程=调用Runtime.getRuntime（）EXEC（NEWPATH）; process.waitFor（）;

}否则if（i == 2）{

String newpath =“perl”+ path +“secondPerl.pl”;

process = Runtime.getRuntime（）。exec（newpath）;

process.waitFor（）;

}

在exec（）方法Java中连接

2 个答案: