java加解密

public class D {
    public static void main(String []args){
    	
    	String s ="清华大学出版社";
    	 char a [] = s.toCharArray();
    	 for(int  i =0;i<a.length;i++){
    		 a[i] =(char)(a[i]^'t');
    	 }
    	 String  secret = new  String(a);
    	 System.out.println("密文:"+secret);
    	 
    	 for(int i=0;i<a.length;i++){
    		 a[i]=(char)(a[i]^'t');
    	 }
    	 String code = new String(a);
    	 System.out.println("原文:"+code);
    } 	

}

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