String ss = "123";
int intReverse = Integer.parseInt(ss);//推荐使用
Integer integerReverse = Integer.valueOf(ss);//使用valueOf解析-128到127之前的值
int num = 11;
String numToString = num + "";
String numToString1 = String.valueOf(num);
System.out.println(intReverse == 123);
System.out.println(integerReverse == 123);
System.out.println(numToString.equals("11"));
System.out.println(numToString1.equals("11"));
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true
true
true
true