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原创 java String 常量加减拼接值对比

java String 常量加减String s = “abc”;String ss = “abc”;String s1= “a”;String s2= “b”;String s3= “c”;String s4 = new String (“abc”)String s5=“ab”;String s6=s5+s3;String s7= s5+“c”;String sss= “a”+ “b”+ “c”;String ssss=s1+s2+s3;s == ss true;s