java内存溢出的四种情况

public class HeapOOM {

    static class User {}

    public static void main(String[] args) {

         List<User> list = new ArrayList<User>();

            while (true) {

                list.add(new User());

         }

    }

}

/*Exception in thread "main" java.lang.OutOfMemoryError:

GC overhead limit exceeded

at com.fdd.test.HeapOOM.main(HeapOOM.java:11)*/

public class StackOutOfMemoryError {

    public static void main(String[] args) {    

         test();

    }

    private static void go() {

        System.out.println("StackOverflowError异常");

        test();

    }

}

/*Exception in thread "main" java.lang.StackOverflowError

    at sun.nio.cs.ext.DoubleByte$Encoder.encodeLoop(DoubleByte.java:617)

    at java.nio.charset.CharsetEncoder.encode(CharsetEncoder.java:579)

    at sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:271)

    at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:125)

    at java.io.OutputStreamWriter.write(OutputStreamWriter.java:207)

    at java.io.BufferedWriter.flushBuffer(BufferedWriter.java:129)

    at java.io.PrintStream.write(PrintStream.java:526)

    at java.io.PrintStream.print(PrintStream.java:597)

    at java.io.PrintStream.println(PrintStream.java:736)

    at com.fdd.test.StackOutOfMemoryError.go(StackOutOfMemoryError.java:11)

at com.fdd.test.StackOutOfMemoryError.go(StackOutOfMemoryError.java:13)*/