package com.vanceinfo.training;public class TestA { public static void main(String[] args) { TestB b = new TestB(); System.out.println("I'm in com/vanceinfo/training"); } }============================================================package com.vanceinfo.training;public class TestB { public static void main(String[] args) { System.out.println("I'm in com/vanceinfo/training"); } }假如是在同一个包(package)里,就不要,否则package com.vanceinfo.training;import com.vanceinfo.exercise.TestB;public class TestA { public static void main(String[] args) { TestB b = new TestB(); System.out.println("I'm in com/vanceinfo/training"); } }============================================================package com.vanceinfo.exercise;public class TestB { public static void main(String[] args) { System.out.println("I'm in com/vanceinfo/training"); } }
{
public static void main(String[] args)
{
TestB b = new TestB();
System.out.println("I'm in com/vanceinfo/training");
}
}============================================================package com.vanceinfo.training;public class TestB
{
public static void main(String[] args)
{
System.out.println("I'm in com/vanceinfo/training");
}
}假如是在同一个包(package)里,就不要,否则package com.vanceinfo.training;import com.vanceinfo.exercise.TestB;public class TestA
{
public static void main(String[] args)
{
TestB b = new TestB();
System.out.println("I'm in com/vanceinfo/training");
}
}============================================================package com.vanceinfo.exercise;public class TestB
{
public static void main(String[] args)
{
System.out.println("I'm in com/vanceinfo/training");
}
}