java编译后int a=true

代码如下：

public class LocalVariablestTest {
    private int count = 0;

    public static void main(String[] args) {
        LocalVariablestTest test = new LocalVariablestTest();
        int num = 10;
        for (int i = 0; i < 10; i++) {
            int a=i;
        }
    }

}

使用idea直接打开编译后的class文件，发现 int num = true;

package com.lazydsr.study.test;

public class LocalVariablestTest {
    private int count = 0;

    public LocalVariablestTest() {
    }

    public static void main(String[] args) {
        new LocalVariablestTest();
        int num = true;

        for(int i = 0; i < 10; ++i) {
        }

    }
}

这是为啥？实在搞不懂了，求助
没有C币，见谅