A place that's easy to misunderstand in Java

1,equals

@Test    publicvoidtest_equal(){        String a="1";        int b=1;        boolean result=a.equals(b);        System.out.println(result);    }

Cause: Equals is automatically converted to the package type when compared
The operating result is:
False
should read:

@Test    publicvoidtest_equal(){        String a="1";        int b=1;        boolean result=a.equals(String.valueOf(b));        System.out.println(result);    }

2, Package Type

@Test    publicvoidtest_equal2(){        Long a=229L;        Long b=229L;        System.out.println((a==b));    }

Run Result: false

@Test    publicvoidtest_equal2(){        Long a=29L;        Long b=29L;        System.out.println((a==b));    }

Run result is: true
should read:

@Test    publicvoidtest_equal2(){        Long a=229L;        Long b=229L;        System.out.println((a.intValue()==b.intValue()));    }

A place that's easy to misunderstand in Java