String包含另一个String

调用String的contains方法或者调用String的indexof方法

public static void main(String... args) throws IOException{
        //read("src/com/FileTest/BufferinputFile.java");
        System.out.println("--");
        String s = "hello world";
        System.out.println(s.contains("hello"));
    }

public static void main(String... args) throws IOException{
       // read("src/com/FileTest/BufferinputFile.java");
        System.out.println("--");
        String s = "hello world";
        System.out.println(s.indexof("hello")!=-1);
    }