HelloWorld.java

public?class?HelloWorld{??

??public?static?void?main(String[]?args)?{??

??????int?a=16;??????

? ? ?double?b=9.5;????????

? ? ?String?str1="hello";????

? ? ?String?str2="imooc";???????

? ? ?System.out.println("a等于b："?+?(a??==?b));????

? ? ?System.out.println("a大于b："?+?(a?>??b));??

? ? ?System.out.println("a小于等于b："?+?(a?<=??b));?

? ? ? System.out.println("str1等于str2："?+?(str1??==?str2));???

?}

}

error: ')' expected
System.out.println("a??b?" + (a b));
^
error: ';' expected
System.out.println("a??b?" + (a b));
^
error: ')' expected
System.out.println("a????b?" + (a b));
^
error: ';' expected
System.out.println("a????b?" + (a b));
^
error: ')' expected
System.out.println("str1??str2?" + (str1 str2));
^
error: ';' expected
System.out.println("str1??str2?" + (str1 str2));
^
6 errors