【发布时间】:2013-03-29 04:12:26
【问题描述】:
我对 Java 编程非常陌生,我正在尝试像这样将 jar 添加到类路径中:
javac -classpath ~/Downloads/algs4.jar. ThreeSum.java
但我仍然收到如下异常:
ThreeSum.java:38: error: cannot find symbol
StdOut.println(a[i] + " " + a[j] + " " + a[k]);
^
symbol: variable StdOut
location: class ThreeSum
ThreeSum.java:62: error: cannot find symbol
int[] a = In.readInts(args[0]);
^
symbol: variable In
location: class ThreeSum
ThreeSum.java:64: error: cannot find symbol
Stopwatch timer = new Stopwatch();
^
symbol: class Stopwatch
location: class ThreeSum
ThreeSum.java:64: error: cannot find symbol
Stopwatch timer = new Stopwatch();
^
symbol: class Stopwatch
location: class ThreeSum
ThreeSum.java:66: error: cannot find symbol
StdOut.println("elapsed time = " + timer.elapsedTime());
^
symbol: variable StdOut
location: class ThreeSum
ThreeSum.java:67: error: cannot find symbol
StdOut.println(cnt);
^
symbol: variable StdOut
location: class ThreeSum
6 errors
我正在尝试here的程序
【问题讨论】:
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Installing the textbook libraries 部分解释了如何执行此操作。