Javac accepts this program:

class Test2 <T extends I1 & I2> { }
 
interface I1 {
    int getFoo();
}
 
interface I2 {
    float getFoo();
}

But correctly rejects this version:

interface I1 {
    int getFoo();
}
 
interface I2 {
    float getFoo();
}
 
class Test2 <T extends I1 & I2> { }