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我不斷收到一個NoClassDefFoundError
每當我試圖運行的代碼的Java怪異的NoClassDefFoundError
ClassTable.getInstance();
下面這一塊是ClassTable
代碼public class ClassTable
{
private static ClassTable classTable = new ClassTable();
private Map<String,Object> pricingTable;
private Date expiry;
private ClassTable()
{
this.expiry = this.getExpiry();
this.pricingTable = buildPricingTables();
}
private Date getExpiry()
{
return DateUtils.INSTANCE.getCutOff();
}
public static ClassTable getInstance()
{
return classTable;
}
}
我試圖步入方法getInstance()
;然而,它立即拋出錯誤。這裏是棧跟蹤
java.lang.NoClassDefFoundError: Could not initialize class helper.ClassTable
at models.SinglePaymentLoan.getPricingTable(SinglePaymentLoan.java:742)
at unit.SinglePaymentLoanTest.testPricingTable(SinglePaymentLoanTest.java:135)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at play.test.PlayJUnitRunner$StartPlay$2$1.evaluate(PlayJUnitRunner.java:114)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:47)
at org.junit.rules.RunRules.evaluate(RunRules.java:18)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at play.test.PlayJUnitRunner.run(PlayJUnitRunner.java:58)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:24)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
at org.junit.runner.JUnitCore.run(JUnitCore.java:136)
at org.junit.runner.JUnitCore.run(JUnitCore.java:117)
at play.test.TestEngine.run(TestEngine.java:112)
at controllers.TestRunner$1.doJobWithResult(TestRunner.java:71)
at controllers.TestRunner$1.doJobWithResult(TestRunner.java:1)
at play.jobs.Job.call(Job.java:146)
at play.jobs.Job$1.call(Job.java:66)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:695)
這意味着您在構建路徑中缺少jar或類。這可能會發生,因爲你沒有放在那裏或者沒有建立這個項目。 –
你嘗試訪問的'DateUtils'來自哪裏? –
從我所見最可能DateUtils是問題,因爲這是ClassTable構造函數所要求的。也許是編譯問題? – fipple