为什么下面的程序还会有 Syntax error on token ":", * expected

[purple.taro]

Exception in thread "main" java.lang.Error: Unresolved compilation problem:
Syntax error on token ":", * expected


public class TestAssert {

public void methodA(int i){
assert (i>=0 : methodB());
System.out.pritnln(i);
}

public int methodB(){
System.out.println("The value must not be negative");
return 3;
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
TestAssert test=new TestAssert();
test.methodA(-10);
}

}

[做鸡真好吃]

[e-mail]

[dewdrop]

JAVA是从JDK1.4才开始支持断言的

估计是你的jdk版本过低吧

[purple.taro]

谢了，各位，我用的Eclipse，是因为没有配置好的原因

[wizardblue]

assert BooleanExpression : anyExpression
assert (i>=0 : methodB());
错了,
应该是 assert (i>=0) : methodB();

[purple.taro]

这样我也试过了，还是有这个异常再现。

[wizardblue]

好像要这样assert i >= 0 : methodB();

[purple.taro]

这样时，会弹出以下异常信息
Exception in thread "main" java.lang.Error: Unresolved compilation problems:
Syntax error on token "assert", ( expected
Syntax error, insert ";" to complete BlockStatements
Syntax error, insert "AssignmentOperator ArrayInitializer" to complete ArrayInitializerAssignement
Syntax error, insert ")" to complete Expression

调试看看