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java | 内存溢出 「堆」
source link: https://benpaodewoniu.github.io/2022/12/17/java107/
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java | 内存溢出 「堆」
讲解堆的内存溢出。
package com.redisc;
import lombok.extern.slf4j.Slf4j;
import java.util.ArrayList;
import java.util.List;
class A {
};
class B {
};
@Slf4j(topic = "c.Run")
public class Run {
static A a = new A();
static B b = new B();
public static void main(String[] args) throws Exception {
int i = 0;
try {
List<String> list = new ArrayList<>();
String a = "hello";
while (true) {
list.add(a);
a = a + a;
i++;
}
} catch (Throwable e) {
e.printStackTrace();
System.out.println(i);
}
}
}
java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:3332)
at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:124)
at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:448)
at java.lang.StringBuilder.append(StringBuilder.java:136)
at com.redisc.Run.main(Run.java:27)
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